Operation Harling was a World War II

World War II

World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

 mission by the British Special Operations Executive

Special Operations Executive

The Special Operations Executive was a World War II organisation of the United Kingdom. It was officially formed by Prime Minister Winston Churchill and Minister of Economic Warfare Hugh Dalton on 22 July 1940, to conduct guerrilla warfare against the Axis powers and to instruct and aid local...

 (SOE), in cooperation with the Greek Resistance

Greek Resistance

The Greek Resistance is the blanket term for a number of armed and unarmed groups from across the political spectrum that resisted the Axis Occupation of Greece in the period 1941–1944, during World War II.-Origins:...

 groups ELAS and EDES, which destroyed the heavily guarded Gorgopotamos viaduct

Viaduct

A viaduct is a bridge composed of several small spans. The term viaduct is derived from the Latin via for road and ducere to lead something. However, the Ancient Romans did not use that term per se; it is a modern derivation from an analogy with aqueduct. Like the Roman aqueducts, many early...

 in Central Greece

Central Greece

Continental Greece or Central Greece , colloquially known as Roúmeli , is a geographical region of Greece. Its territory is divided into the administrative regions of Central Greece, Attica, and part of West Greece...

 on 25 November 1942. This was one of the first major sabotage acts in Axis

Axis Powers

The Axis powers , also known as the Axis alliance, Axis nations, Axis countries, or just the Axis, was an alignment of great powers during the mid-20th century that fought World War II against the Allies. It began in 1936 with treaties of friendship between Germany and Italy and between Germany and...

-occupied Europe, and the beginning of a permanent British involvement with the Greek Resistance.

Background

Operation Harling was conceived in late summer 1942 as an effort to stem the flow of supplies through Greece to the German forces

Afrika Korps

The German Africa Corps , or the Afrika Korps as it was popularly called, was the German expeditionary force in Libya and Tunisia during the North African Campaign of World War II...

 under Erwin Rommel

Erwin Rommel

Erwin Johannes Eugen Rommel , popularly known as the Desert Fox , was a German Field Marshal of World War II. He won the respect of both his own troops and the enemies he fought....

 in North Africa

North Africa

North Africa or Northern Africa is the northernmost region of the African continent, linked by the Sahara to Sub-Saharan Africa. Geopolitically, the United Nations definition of Northern Africa includes eight countries or territories; Algeria, Egypt, Libya, Morocco, South Sudan, Sudan, Tunisia, and...

. To this end, the Cairo office of the SOE decided to send a sabotage team to cut the railway line connecting Athens

Athens

Athens , is the capital and largest city of Greece. Athens dominates the Attica region and is one of the world's oldest cities, as its recorded history spans around 3,400 years. Classical Athens was a powerful city-state...

 with Thessaloniki

Thessaloniki

Thessaloniki , historically also known as Thessalonica, Salonika or Salonica, is the second-largest city in Greece and the capital of the region of Central Macedonia as well as the capital of the Decentralized Administration of Macedonia and Thrace...

. Three viaducts were targeted, all in the Brallos area: the Gorgopotamos, Asopos and Papadia bridges. The destruction of the Asopos viaduct was preferable, since it would take longer to rebuild, but the choice would be ultimately left to the mission's leader. The team would be under the command of Lieutenant Colonel (later brevetted

Brevet (military)

In many of the world's military establishments, brevet referred to a warrant authorizing a commissioned officer to hold a higher rank temporarily, but usually without receiving the pay of that higher rank except when actually serving in that role. An officer so promoted may be referred to as being...

 to Brigadier

Brigadier

Brigadier is a senior military rank, the meaning of which is somewhat different in different military services. The brigadier rank is generally superior to the rank of colonel, and subordinate to major general....

) E. C. W. "Eddie" Myers of the Royal Engineers

Royal Engineers

The Corps of Royal Engineers, usually just called the Royal Engineers , and commonly known as the Sappers, is one of the corps of the British Army....

, "the only parachute-trained professional sapper

Sapper

A sapper, pioneer or combat engineer is a combatant soldier who performs a wide variety of combat engineering duties, typically including, but not limited to, bridge-building, laying or clearing minefields, demolitions, field defences, general construction and building, as well as road and airfield...

 officer in the Middle East

Middle East

The Middle East is a region that encompasses Western Asia and Northern Africa. It is often used as a synonym for Near East, in opposition to Far East...

", according to his second-in-command, Major (later brevetted to Colonel) Chris Woodhouse. After completion of the mission, the British team would be evacuated, leaving only Woodhouse, the Greek 2nd Lieutenant Themis Marinos and two radio operators to establish a liaison with the fledgling Greek Resistance movement.

In Greece meanwhile, the first attempts at armed resistance in Greek Macedonia were quelled in the summer of 1941 by the Germans and Bulgarians. The spring and summer of 1942 however saw the birth of the first armed guerrilla units in the mountainous interior of Central Greece and Epirus

Epirus (region)

Epirus is a geographical and historical region in southeastern Europe, shared between Greece and Albania. It lies between the Pindus Mountains and the Ionian Sea, stretching from the Bay of Vlorë in the north to the Ambracian Gulf in the south...

. From the beginning, the largest among them was the Greek People's Liberation Army (ELAS), founded by the Communist-led National Liberation Front (EAM) and headed by Aris Velouchiotis

Aris Velouchiotis

Aris Velouchiotis , the nom de guerre of Athanasios Klaras , was the most prominent leader and chief instigator of the Greek People's Liberation Army , the military branch of the National Liberation Front , which was the major resistance organization in occupied Greece from 1942 to 1945...

. The second largest were the forces of the National Republican Greek League (EDES), headed by Colonel Napoleon Zervas

Napoleon Zervas

Napoleon Zervas was a Greek general and resistance leader during World War II. He organized and led the National Republican Greek League , the second most significant , in terms of size and activity, resistance organization against the Axis Occupation of Greece.-Early life and army career:Zervas...

. The Harling mission's British officers were largely ignorant of the realities on the ground in occupied Greece, or of the precise nature, let alone the strength and political affiliation of the emerging resistance groups.

Landing in Greece, contacting the Resistance

The SOE team numbered twelve men and was divided into three groups of four, each consisting of a leader, an interpreter, a sapper and a radio operator. The first group was composed of Lt. Colonel Eddie Myers, CO of the mission and group leader, Captain Denys Hamson as interpreter, Captain Tom Barnes (a New Zealander) as the sapper and Sergeant Len Wilmot as wireless operator. The second group consisted of Maj. Chris Woodhouse, 2nd Lieutenant Themis Marinos (a Greek), Lieutenant Inder Gill (of mixed Scottish

Scottish people

The Scottish people , or Scots, are a nation and ethnic group native to Scotland. Historically they emerged from an amalgamation of the Picts and Gaels, incorporating neighbouring Britons to the south as well as invading Germanic peoples such as the Anglo-Saxons and the Norse.In modern use,...

 and Sikh

Sikh

A Sikh is a follower of Sikhism. It primarily originated in the 15th century in the Punjab region of South Asia. The term "Sikh" has its origin in Sanskrit term शिष्य , meaning "disciple, student" or शिक्ष , meaning "instruction"...

 descent who later became a Lieutenant General in the Indian Army

Indian Army

The Indian Army is the land based branch and the largest component of the Indian Armed Forces. With about 1,100,000 soldiers in active service and about 1,150,000 reserve troops, the Indian Army is the world's largest standing volunteer army...

) and Sergeant Doug Phillips. The third group consisted of Major John Cooke, Captain Nat Barker, Captain Arthur Edmonds (a New Zealander) and Sergeant Mike Chittis.

The team was distributed per group to three B-24 Liberator

B-24 Liberator

The Consolidated B-24 Liberator was an American heavy bomber, designed by Consolidated Aircraft of San Diego, California. It was known within the company as the Model 32, and a small number of early models were sold under the name LB-30, for Land Bomber...

 aircraft. A first attempt to drop them over Greece on 28 September failed, as the pre-arranged signal fires had not been lit. During the next flight on 30 September, the fires were located, and the Harling team was dropped near Mount Giona

Mount Giona

Mount Giona is a mountain in Central Greece, in the prefecture of Phocis, located between the mountains of Parnassus and Vardousia. Known in classical antiquity as the Aselinon Oros , it is the highest mountain south of Olympus and the fifth overall in Greece...

 in Central Greece. The third plane was unable to locate any fires, and Major Cooke's group jumped near the heavily garrisonned town of Karpenissi. One group member even landed inside the town itself, and was hidden by local Greeks. Evading the Italian troops searching for them, they made for the hills, where they came upon the guerrillas of Aris Velouchiotis.

In the meantime, the main group was being hidden by the local Greeks and constantly moved around the area to prevent their capture by Italian searching parties, while Woodhouse set out to the town of Amfissa

Amfissa

Amfissa is a town and a former municipality in Phocis, Greece. Since the 2011 local government reform it is part of the municipality Delphi, of which it is the seat and a municipal unit. It is also the capital of the regional unit of Phocis...

 to establish contact with Cairo

Cairo

Cairo , is the capital of Egypt and the largest city in the Arab world and Africa, and the 16th largest metropolitan area in the world. Nicknamed "The City of a Thousand Minarets" for its preponderance of Islamic architecture, Cairo has long been a centre of the region's political and cultural life...

. During this time, Myers and Hamson, led by a local Greek guide, Yiannis, undertook a reconnaissance of the three prospective targets, and chose Gorgopotamos, which afforded better prospects of success: its garrison of 80 Italians was small enough, and it offered good access, cover and a line of retreat for the attacking force. On 2 November, Woodhouse set out to establish contact with Zervas' men in the Valtos Mountains region, while on 14 November, Major Cooke's team rejoined the main party, with information that they had made contact with Aris. Woodhouse returned on the same day, with Zervas and 45 of his men. From the outset, Zervas was enthusiastic for the mission, but Velouchiotis less so, for the Athens-based leadership of EAM-ELAS still did not appreciate the importance and potential of armed struggle in the countryside, preferring to focus on the cities instead. In the end, Velouchiotis, on his own initiative and contrary to the instructions received from EAM, decided to participate in the operation.

The sabotage

The force available for the operation numbered 150 men: the twelve-strong British team, which would form the demolition party, 86 ELAS men and 52 EDES men, who would provide cover and neutralize the garrison. According to the plan, the attack was to take place on 23:00 on 25 November. Two teams of eight guerrillas were to cut the railway and telephone lines in both directions, as well as cover the approaches to the bridge itself, while the main force of 100 guerrillas was to neutralize the garrison. The demolition party, divided into three teams, would wait upriver until the garrison had been subdued, and then lay the charges.

The attack on the garrison outposts on the two ends of the bridge began as scheduled, but went on far longer than the time originally allotted. Myers took it upon himself to send the demolition teams in while the fight was still under way. The setting of the charges was delayed also, since the girders to be destroyed turned out to be differently shaped than had been anticipated, forcing the British sappers to cut their plastic explosive charges to pieces and then assemble new ones. After the charges were set and the fuses were lit, the first explosion occurred on 01:30, heavily damaging the central pier and collapsing two spans. The British demolition teams then set new explosives to the second pier and the remaining span, which too went off on 02:21. In the meantime, the guerrilla outposts had engaged and halted a train with Italian reinforcements heading to the scene. By 04:30, the entire attacking force, which had suffered only four wounded, had successfully disengaged and retreated to its assembly area.

Aftermath

The sabotage mission was a major success for SOE, being the biggest such operation carried out until then. Although its original military objective, the disruption of supplies for Rommel's troops, had been rendered obsolete by the Allied victory at El Alamein

Second Battle of El Alamein

The Second Battle of El Alamein marked a major turning point in the Western Desert Campaign of the Second World War. The battle took place over 20 days from 23 October – 11 November 1942. The First Battle of El Alamein had stalled the Axis advance. Thereafter, Lieutenant-General Bernard Montgomery...

, it did display the potential for major guerrilla actions in serving Allied strategic objectives, encouraged SOE to aid the development of resistance movements, and provided a major morale boost for occupied Greece. In its aftermath, the Harling mission was not withdrawn, as originally envisaged, but instructed to remain on spot and form the British Military Mission to Greece. Unfortunately for the Greeks however, it was the last time where ELAS and EDES, the country's two major guerrilla forces, would cooperate militarily; within a month, the first clashes between ELAS and EDES forces occurred, a prelude of the open conflict that would erupt between ELAS and the other resistance groups in 1943, and a herald of the Greek Civil War

Greek Civil War

The Greek Civil War was fought from 1946 to 1949 between the Greek governmental army, backed by the United Kingdom and United States, and the Democratic Army of Greece , the military branch of the Greek Communist Party , backed by Bulgaria, Yugoslavia and Albania...

.