English Channel naval campaign, 1338-1339
Encyclopedia
The English Channel naval campaign of the years 1338 and 1339 saw a protracted series of raids conducted by the nascent French navy and numerous privately owned raiders and pirates against English towns, shipping and islands in the English Channel
which caused widespread panic, damage and financial loss to the region and prompted a serious readjustment of English finances during the early stages of the Hundred Years War. This period was then followed by a French disaster caused by over-confidence and a reversing of roles which had a major effect in the English successes of the next two decades. However this result was by no means assured until late 1339 and had the French fought a little longer, they could have potentially ended the war before it had really begun.
Coastal raids were not uncommon in fourteenth century England, with privately owned shipping and occasionally royal ships from France, Castile, Genoa, Scotland and Scandinavia all conducing nuisance attacks against coastal shipping and fishing villages throughout the era, even during periods of peace. What made the naval campaigns of 1338 and 1339 so important was that these were focused and sustained raids with a deliberate strategic aim in mind, targeting major English towns rather than isolated hamlets and doing so at a critical point in the developing war.
s could be launched into the French heartlands and where the boundary was poorly defined and relied far more on the allegiance of the local fife than national designations. To the north-east, the situation was even more grim, with the English funded armies of Flanders
, Hainaut
, Brabant
and even the Holy Roman Empire
either preparing or threatening invasion of France's northern provinces.
, one Nicholas Béhuchet, who had previously served as a treasury official and now was instructed to wage economic warfare against England. On 24 March he began his campaign, leading a large fleet of small coastal ships across the Channel from Calais
and into the Solent
where they landed and burnt the vitally important port-town of Portsmouth
. The town was unwalled and undefended and the French were not suspected as they sailed towards the town with English flags flying. The result was a disaster for Edward, as the towns shipping and supplies were looted, the houses, stores and docks burnt down and those of the population unable to flee killed or taken off as slaves. No English ships were available to contest their passage from Portsmouth and none of the militias intended to form in such an instance made an appearance.
The fleet then sailed to the Channel Islands
, which had already suffered minor attacks the previous year but now faced a major threat, Jersey
being invaded by the French crews and the entire eastern half of the island reduced to ruins, only Mont Orgueil
holding out. The raid had been predicted by intelligence officers in the royal household, but defensive measures were woefully inefficient and efforts to intercept the attack had utterly failed.
and Cornwall
refused to supply any materials or money for the war for the remainder of the year, insisting they needed their resources to defend themselves. Such precautions were not misplaced; hearing of the weakness of the English coast, dozens of merchants and landlords in Normandy
, Picardy
and Brittany
bought coastal traders and equipped them for war resulting in pinprick raids and piracy right along the English coastline. Evidence is unclear whether the French understood exactly how effective this tactic was; Béhuchet clearly grasped that by raiding English shipping and cutting off trade he could cripple the English economy but it is not known if he understood the financial drain his coastal raids had on Edward's exchequer (modern historians tend to think that perhaps he did not but that he considered them to be good for the war effort in any case).
This piracy also affected the other theatre of war, as French and Castilian ships stationed at the island of Oleron
off Ushant
attacked grain, trade and payroll ships between England and Bordeaux
, reducing that city and the region it governed to near mutiny, especially after a large food convoy was badly damaged in an action off Talmont on the 23 August.
. The island of Sark
, which had suffered a serious raid the year before, fell without a fight and Guernsey
was captured after a brief campaign. The island was largely undefended, as most of the Channel Islands garrison was in Jersey to prevent another raid there, and the few that were sent to Guernsey and Sark were captured at sea. Messengers from the islands were also captured, preventing the English government from discovering what had happened for over a week. On Guernsey, the forts of Castle Cornet
and Vale Castle were the only points to hold out. Neither fort lasted very long as both were undermanned and unprovisioned. The garrisons were put to death. A brief naval battle was fought between Channel Islanders in coastal and fishing vessels and Italian galleys, but despite two of the Italian ships being sunk the Islanders were defeated with heavy casualties. Guernsey remained French for sometime, only being relinquished when defending the island became untenable in the aftermath of the battle of Sluys
.
The next aim for Béhuchet and his lieutenant Hugh Quiéret were the supply lines between England and Flanders and thus they gathered over 40 large ships at Harfleur
and Dieppe
and used them to attack a small English fleet off Cadsand. The five large vessels were loading trade goods off the island and were surprised and rapidly overwhelmed, resulting in the loss of five large and powerful English ships including Edward III's flagships the Cog Edward and the Christopher. The crews and a party of reinforcements who were captured were all executed and the ships added to the French fleet. A few days later on 5 October, this force conducted its most damaging raid of all landing several thousand French, Norman, Italian and Castilian sailors close to the major port of Southampton
and assaulting it from both land and sea. The town's walls were old and crumbling and direct orders to repair it had been ignored. Most of the town's militia and citizens fled in panic into the countryside, only the castle's garrison holding out for a brief while until a force of Italians breached the defences and the town fell. The scenes of Portsmouth were repeated as the entire town was razed to the ground, thousands of pounds worth of stores and shipping taken back to France and captives massacred or taken as slaves. The following day militia bands began to harass the French force on the outskirts of the town and the French departed, leaving behind the burning town, which was further damaged by brigands who came to loot before the local authorities could return.
, the large scale raids of 1338 were over. An attack on Jersey failed as the island was now too strongly defended and attacks on Harwich
, Southampton again and Plymouth
were driven off with heavy losses, the mercenary elements of the French force unwilling to risk a large scale battle. Hastings
was burnt to the ground, but it was little more than a fishing village at the time and did not represent a major success. The combined fleet was reduced to attacking fishing boats and parading the bodies through the streets of Calais.
An English fleet had also been constituted over the winter and this was used in an effort to gain revenge on the French by attacking coastal shipping. The result was an embarrassing disaster as the mercenary captains of the fleet realised that more money could be made by attacking and looting the Flemish convoys of Edward's allies rather than the French, forcing Edward to pay a huge amount of compensation and endure severe diplomatic embarrassment. This force did prove vital though in July, when 67 French and mercenary vessels attempted to attack the Cinque Ports
. The expedition was met by organised militia at Sandwich
and turned towards Rye
, burning several small villages on the way but failing to land at the town. There the English fleet under Robert Morley
caught up with them, forcing the French force to flee back across the Channel. This scare had been too much for the Genoese mercenaries who made up the most experienced part of the French fleet, and they demanded more pay. King Philip VI responded by imprisoning fifteen of them, whereupon the others simply returned to Italy, at a stroke costing the French their best sailors and ships as well as two thirds of their navy.
and Le Tréport
and foraging inland, ravaging several villages and provoking a panic to mirror that at Southampton the year before. He also surprised and destroyed a French fleet in Boulogne
harbour. English and Flemish merchants rapidly fitted out raiding ships and soon coastal villages and shipping along the North and even the west coasts of France were under attack. The Flemish navy too was active, sending their fleet against the important port of Dieppe
in September and burning it to the ground. These successes did much to rebuild morale in England and the Low Countries as well as repair England's battered trade. It did not however have anything like the financial impact of the earlier French raids as France's continental economy could survive depredations from the sea much better than the maritime English. The following year however, a naval operation would have a significant effect on the war and provide the first major clash or arms when the English and French fleets met at the battle of Sluys
. The victory of the English there, helped substantially by the Italian desertion the year before would provide naval superiority in the Channel for decades to come resulting in the English ability to invade France at several points at once, an advantage that would prove vital in the longer war.
English Channel
The English Channel , often referred to simply as the Channel, is an arm of the Atlantic Ocean that separates southern England from northern France, and joins the North Sea to the Atlantic. It is about long and varies in width from at its widest to in the Strait of Dover...
which caused widespread panic, damage and financial loss to the region and prompted a serious readjustment of English finances during the early stages of the Hundred Years War. This period was then followed by a French disaster caused by over-confidence and a reversing of roles which had a major effect in the English successes of the next two decades. However this result was by no means assured until late 1339 and had the French fought a little longer, they could have potentially ended the war before it had really begun.
Coastal raids were not uncommon in fourteenth century England, with privately owned shipping and occasionally royal ships from France, Castile, Genoa, Scotland and Scandinavia all conducing nuisance attacks against coastal shipping and fishing villages throughout the era, even during periods of peace. What made the naval campaigns of 1338 and 1339 so important was that these were focused and sustained raids with a deliberate strategic aim in mind, targeting major English towns rather than isolated hamlets and doing so at a critical point in the developing war.
The Hundred Years War
In 1338 with the Hundred Years War just a year old, the French government was facing a severe threat on two sides. From the south were the English territories of Gascony and Aquitaine, from which lancing raids and chevauchéeChevauchée
A chevauchée was a raiding method of medieval warfare for weakening the enemy, focusing mainly on wreaking havoc, burning and pillaging enemy territory, in order to reduce the productivity of a region; as opposed to siege warfare or wars of conquest...
s could be launched into the French heartlands and where the boundary was poorly defined and relied far more on the allegiance of the local fife than national designations. To the north-east, the situation was even more grim, with the English funded armies of Flanders
Flanders
Flanders is the community of the Flemings but also one of the institutions in Belgium, and a geographical region located in parts of present-day Belgium, France and the Netherlands. "Flanders" can also refer to the northern part of Belgium that contains Brussels, Bruges, Ghent and Antwerp...
, Hainaut
County of Hainaut
The County of Hainaut was a historical region in the Low Countries with its capital at Mons . In English sources it is often given the archaic spelling Hainault....
, Brabant
Duchy of Brabant
The Duchy of Brabant was a historical region in the Low Countries. Its territory consisted essentially of the three modern-day Belgian provinces of Flemish Brabant, Walloon Brabant and Antwerp, the Brussels-Capital Region and most of the present-day Dutch province of North Brabant.The Flag of...
and even the Holy Roman Empire
Holy Roman Empire
The Holy Roman Empire was a realm that existed from 962 to 1806 in Central Europe.It was ruled by the Holy Roman Emperor. Its character changed during the Middle Ages and the Early Modern period, when the power of the emperor gradually weakened in favour of the princes...
either preparing or threatening invasion of France's northern provinces.
Financial troubles
However, King Edward III, the leader of this loose coalition, had one very serious problem. In spite of England's huge revenue from control of the wool industry, his exchequer was bankrupt. Without English funding, his coalition would collapse but such huge spending requirements were needed to maintain the army building in Flanders that by 1338 after just one campaign, he was unable to continue fighting without borrowing enormous sums from Italian bankers at ruinous interest (which he would later default on, prompting an enormous financial crash in Italy). Edward's concerns were common knowledge to other heads of state in Europe and it was recognised by the French government that by destroying English ports and shipping, they could gain such a stranglehold both on the wool trade and the shipping of reinforcements that Edward might be forced to abandon his invasion plans.Portsmouth & Jersey
At the beginning of February, King Philip VI appointed a new Admiral of FranceAdmiral of France
The title Admiral of France is one of the Great Officers of the Crown of France, the naval equivalent of Marshal of France.The title was created in 1270 by Louis IX of France, during the Eighth Crusade. At the time it was equivalent to the office of Constable of France. The Admiral was responsible...
, one Nicholas Béhuchet, who had previously served as a treasury official and now was instructed to wage economic warfare against England. On 24 March he began his campaign, leading a large fleet of small coastal ships across the Channel from Calais
Calais
Calais is a town in Northern France in the department of Pas-de-Calais, of which it is a sub-prefecture. Although Calais is by far the largest city in Pas-de-Calais, the department's capital is its third-largest city of Arras....
and into the Solent
Solent
The Solent is a strait separating the Isle of Wight from the mainland of England.The Solent is a major shipping route for passengers, freight and military vessels. It is an important recreational area for water sports, particularly yachting, hosting the Cowes Week sailing event annually...
where they landed and burnt the vitally important port-town of Portsmouth
Portsmouth
Portsmouth is the second largest city in the ceremonial county of Hampshire on the south coast of England. Portsmouth is notable for being the United Kingdom's only island city; it is located mainly on Portsea Island...
. The town was unwalled and undefended and the French were not suspected as they sailed towards the town with English flags flying. The result was a disaster for Edward, as the towns shipping and supplies were looted, the houses, stores and docks burnt down and those of the population unable to flee killed or taken off as slaves. No English ships were available to contest their passage from Portsmouth and none of the militias intended to form in such an instance made an appearance.
The fleet then sailed to the Channel Islands
Channel Islands
The Channel Islands are an archipelago of British Crown Dependencies in the English Channel, off the French coast of Normandy. They include two separate bailiwicks: the Bailiwick of Guernsey and the Bailiwick of Jersey...
, which had already suffered minor attacks the previous year but now faced a major threat, Jersey
Jersey
Jersey, officially the Bailiwick of Jersey is a British Crown Dependency off the coast of Normandy, France. As well as the island of Jersey itself, the bailiwick includes two groups of small islands that are no longer permanently inhabited, the Minquiers and Écréhous, and the Pierres de Lecq and...
being invaded by the French crews and the entire eastern half of the island reduced to ruins, only Mont Orgueil
Mont Orgueil
Mont Orgueil is a castle in Jersey. It is located overlooking the harbour of Gorey. It is also called Gorey Castle by English-speakers, and lé Vièr Châté by Jèrriais-speakers....
holding out. The raid had been predicted by intelligence officers in the royal household, but defensive measures were woefully inefficient and efforts to intercept the attack had utterly failed.
Piracy
This raid caused panic in numerous communities of southern England, and prompted a flurry of expensive defence precautions along the coastline further reducing Edward's ability to make war on France from the continent. The furthest reaches of the English coast, at DevonDevon
Devon is a large county in southwestern England. The county is sometimes referred to as Devonshire, although the term is rarely used inside the county itself as the county has never been officially "shired", it often indicates a traditional or historical context.The county shares borders with...
and Cornwall
Cornwall
Cornwall is a unitary authority and ceremonial county of England, within the United Kingdom. It is bordered to the north and west by the Celtic Sea, to the south by the English Channel, and to the east by the county of Devon, over the River Tamar. Cornwall has a population of , and covers an area of...
refused to supply any materials or money for the war for the remainder of the year, insisting they needed their resources to defend themselves. Such precautions were not misplaced; hearing of the weakness of the English coast, dozens of merchants and landlords in Normandy
Normandy
Normandy is a geographical region corresponding to the former Duchy of Normandy. It is in France.The continental territory covers 30,627 km² and forms the preponderant part of Normandy and roughly 5% of the territory of France. It is divided for administrative purposes into two régions:...
, Picardy
Picardy
This article is about the historical French province. For other uses, see Picardy .Picardy is a historical province of France, in the north of France...
and Brittany
Brittany
Brittany is a cultural and administrative region in the north-west of France. Previously a kingdom and then a duchy, Brittany was united to the Kingdom of France in 1532 as a province. Brittany has also been referred to as Less, Lesser or Little Britain...
bought coastal traders and equipped them for war resulting in pinprick raids and piracy right along the English coastline. Evidence is unclear whether the French understood exactly how effective this tactic was; Béhuchet clearly grasped that by raiding English shipping and cutting off trade he could cripple the English economy but it is not known if he understood the financial drain his coastal raids had on Edward's exchequer (modern historians tend to think that perhaps he did not but that he considered them to be good for the war effort in any case).
This piracy also affected the other theatre of war, as French and Castilian ships stationed at the island of Oleron
Oléron
Île d'Oléron is an island off the Atlantic coast of France , on the southern side of the Pertuis d'Antioche strait....
off Ushant
Ushant
Ushant is an island at the south-western end of the English Channel which marks the north-westernmost point of metropolitan France. It belongs to Brittany and is in the traditional region of Bro-Leon. Administratively, Ushant is a commune in the Finistère department...
attacked grain, trade and payroll ships between England and Bordeaux
Bordeaux
Bordeaux is a port city on the Garonne River in the Gironde department in southwestern France.The Bordeaux-Arcachon-Libourne metropolitan area, has a population of 1,010,000 and constitutes the sixth-largest urban area in France. It is the capital of the Aquitaine region, as well as the prefecture...
, reducing that city and the region it governed to near mutiny, especially after a large food convoy was badly damaged in an action off Talmont on the 23 August.
Guernsey & Southampton
The campaign at sea began again in September, when a large French and Italian fleet descended on the Channel Islands once again under Robert Bertrand, Marshal of FranceMarshal of France
The Marshal of France is a military distinction in contemporary France, not a military rank. It is granted to generals for exceptional achievements...
. The island of Sark
Sark
Sark is a small island in the Channel Islands in southwestern English Channel, off the French coast of Normandy. It is a royal fief, geographically located in the Channel Islands in the Bailiwick of Guernsey, with its own set of laws based on Norman law and its own parliament. It has a population...
, which had suffered a serious raid the year before, fell without a fight and Guernsey
Guernsey
Guernsey, officially the Bailiwick of Guernsey is a British Crown dependency in the English Channel off the coast of Normandy.The Bailiwick, as a governing entity, embraces not only all 10 parishes on the Island of Guernsey, but also the islands of Herm, Jethou, Burhou, and Lihou and their islet...
was captured after a brief campaign. The island was largely undefended, as most of the Channel Islands garrison was in Jersey to prevent another raid there, and the few that were sent to Guernsey and Sark were captured at sea. Messengers from the islands were also captured, preventing the English government from discovering what had happened for over a week. On Guernsey, the forts of Castle Cornet
Castle Cornet
Castle Cornet is a large island castle in Guernsey, and former tidal island, also known as Cornet Rock or Castle Rock, which has been part of one of the breakwaters of St Peter Port's harbour, the main one in the island, since 1859.- Geography :...
and Vale Castle were the only points to hold out. Neither fort lasted very long as both were undermanned and unprovisioned. The garrisons were put to death. A brief naval battle was fought between Channel Islanders in coastal and fishing vessels and Italian galleys, but despite two of the Italian ships being sunk the Islanders were defeated with heavy casualties. Guernsey remained French for sometime, only being relinquished when defending the island became untenable in the aftermath of the battle of Sluys
Battle of Sluys
The decisive naval Battle of Sluys , also called Battle of l'Ecluse was fought on 24 June 1340 as one of the opening conflicts of the Hundred Years' War...
.
The next aim for Béhuchet and his lieutenant Hugh Quiéret were the supply lines between England and Flanders and thus they gathered over 40 large ships at Harfleur
Harfleur
-Population:-Places of interest:* The church of St-Martin, dating from the fourteenth century.* The seventeenth century Hôtel de Ville .* Medieval ramparts * The fifteenth century museums of fishing and of archaeology and history....
and Dieppe
Dieppe, Seine-Maritime
Dieppe is a commune in the Seine-Maritime department in France. In 1999, the population of the whole Dieppe urban area was 81,419.A port on the English Channel, famous for its scallops, and with a regular ferry service from the Gare Maritime to Newhaven in England, Dieppe also has a popular pebbled...
and used them to attack a small English fleet off Cadsand. The five large vessels were loading trade goods off the island and were surprised and rapidly overwhelmed, resulting in the loss of five large and powerful English ships including Edward III's flagships the Cog Edward and the Christopher. The crews and a party of reinforcements who were captured were all executed and the ships added to the French fleet. A few days later on 5 October, this force conducted its most damaging raid of all landing several thousand French, Norman, Italian and Castilian sailors close to the major port of Southampton
Southampton
Southampton is the largest city in the county of Hampshire on the south coast of England, and is situated south-west of London and north-west of Portsmouth. Southampton is a major port and the closest city to the New Forest...
and assaulting it from both land and sea. The town's walls were old and crumbling and direct orders to repair it had been ignored. Most of the town's militia and citizens fled in panic into the countryside, only the castle's garrison holding out for a brief while until a force of Italians breached the defences and the town fell. The scenes of Portsmouth were repeated as the entire town was razed to the ground, thousands of pounds worth of stores and shipping taken back to France and captives massacred or taken as slaves. The following day militia bands began to harass the French force on the outskirts of the town and the French departed, leaving behind the burning town, which was further damaged by brigands who came to loot before the local authorities could return.
1339
An early winter forced a pause in the Channel warfare, and 1339 saw a vastly different situation, as English towns had taken the initiative over the winter and prepared organised militias to drive off raiders more interested in plunder than set-piece battles. Responsibility over these militias was placed in the hands of several leading Earls, who were warned that if they failed to defend their stretch of coastline there would be penalties. Although piracy at sea was still a serious problem, with ships burnt and crews massacred as far north as the Bristol ChannelBristol Channel
The Bristol Channel is a major inlet in the island of Great Britain, separating South Wales from Devon and Somerset in South West England. It extends from the lower estuary of the River Severn to the North Atlantic Ocean...
, the large scale raids of 1338 were over. An attack on Jersey failed as the island was now too strongly defended and attacks on Harwich
Harwich
Harwich is a town in Essex, England and one of the Haven ports, located on the coast with the North Sea to the east. It is in the Tendring district. Nearby places include Felixstowe to the northeast, Ipswich to the northwest, Colchester to the southwest and Clacton-on-Sea to the south...
, Southampton again and Plymouth
Plymouth
Plymouth is a city and unitary authority area on the coast of Devon, England, about south-west of London. It is built between the mouths of the rivers Plym to the east and Tamar to the west, where they join Plymouth Sound...
were driven off with heavy losses, the mercenary elements of the French force unwilling to risk a large scale battle. Hastings
Hastings
Hastings is a town and borough in the county of East Sussex on the south coast of England. The town is located east of the county town of Lewes and south east of London, and has an estimated population of 86,900....
was burnt to the ground, but it was little more than a fishing village at the time and did not represent a major success. The combined fleet was reduced to attacking fishing boats and parading the bodies through the streets of Calais.
An English fleet had also been constituted over the winter and this was used in an effort to gain revenge on the French by attacking coastal shipping. The result was an embarrassing disaster as the mercenary captains of the fleet realised that more money could be made by attacking and looting the Flemish convoys of Edward's allies rather than the French, forcing Edward to pay a huge amount of compensation and endure severe diplomatic embarrassment. This force did prove vital though in July, when 67 French and mercenary vessels attempted to attack the Cinque Ports
Cinque Ports
The Confederation of Cinque Ports is a historic series of coastal towns in Kent and Sussex. It was originally formed for military and trade purposes, but is now entirely ceremonial. It lies at the eastern end of the English Channel, where the crossing to the continent is narrowest...
. The expedition was met by organised militia at Sandwich
Sandwich, Kent
Sandwich is a historic town and civil parish on the River Stour in the Non-metropolitan district of Dover, within the ceremonial county of Kent, south-east England. It has a population of 6,800....
and turned towards Rye
Rye, East Sussex
Rye is a small town in East Sussex, England, which stands approximately two miles from the open sea and is at the confluence of three rivers: the Rother, the Tillingham and the Brede...
, burning several small villages on the way but failing to land at the town. There the English fleet under Robert Morley
Robert Morley
Robert Adolph Wilton Morley, CBE was an English actor who, often in supporting roles, was usually cast as a pompous English gentleman representing the Establishment...
caught up with them, forcing the French force to flee back across the Channel. This scare had been too much for the Genoese mercenaries who made up the most experienced part of the French fleet, and they demanded more pay. King Philip VI responded by imprisoning fifteen of them, whereupon the others simply returned to Italy, at a stroke costing the French their best sailors and ships as well as two thirds of their navy.
English revenge
The English soon heard of this development, Morley taking his fleet to the French coast, burning the towns of AultAult
Ault as a surname may refer to:*Chris Ault, head coach for the Nevada Wolf Pack football team*Doug Ault, Major League Baseball player*E.B. "Harry" Ault, American labor union newspaper editor*George Ault, American painter...
and Le Tréport
Le Tréport
Le Tréport is a commune in the Seine-Maritime department in the Haute-Normandie region in northern France.-Geography:A small fishing port and light industrial town situated in the Pays de Caux, some northeast of Dieppe at the junction of the D940, the D78 and the D1015 roads...
and foraging inland, ravaging several villages and provoking a panic to mirror that at Southampton the year before. He also surprised and destroyed a French fleet in Boulogne
Boulogne-sur-Mer
-Road:* Metropolitan bus services are operated by the TCRB* Coach services to Calais and Dunkerque* A16 motorway-Rail:* The main railway station is Gare de Boulogne-Ville and located in the south of the city....
harbour. English and Flemish merchants rapidly fitted out raiding ships and soon coastal villages and shipping along the North and even the west coasts of France were under attack. The Flemish navy too was active, sending their fleet against the important port of Dieppe
Dieppe, Seine-Maritime
Dieppe is a commune in the Seine-Maritime department in France. In 1999, the population of the whole Dieppe urban area was 81,419.A port on the English Channel, famous for its scallops, and with a regular ferry service from the Gare Maritime to Newhaven in England, Dieppe also has a popular pebbled...
in September and burning it to the ground. These successes did much to rebuild morale in England and the Low Countries as well as repair England's battered trade. It did not however have anything like the financial impact of the earlier French raids as France's continental economy could survive depredations from the sea much better than the maritime English. The following year however, a naval operation would have a significant effect on the war and provide the first major clash or arms when the English and French fleets met at the battle of Sluys
Battle of Sluys
The decisive naval Battle of Sluys , also called Battle of l'Ecluse was fought on 24 June 1340 as one of the opening conflicts of the Hundred Years' War...
. The victory of the English there, helped substantially by the Italian desertion the year before would provide naval superiority in the Channel for decades to come resulting in the English ability to invade France at several points at once, an advantage that would prove vital in the longer war.