Alexander Freiherr von Spaen (14 January 1619 – 23 October 1692) was a Generalfeldmarschall

Generalfeldmarschall

Field Marshal or Generalfeldmarschall in German, was a rank in the armies of several German states and the Holy Roman Empire; in the Austrian Empire, the rank Feldmarschall was used...

 of Brandenburg-Prussia

Brandenburg-Prussia

Brandenburg-Prussia is the historiographic denomination for the Early Modern realm of the Brandenburgian Hohenzollerns between 1618 and 1701. Based in the Electorate of Brandenburg, the main branch of the Hohenzollern intermarried with the branch ruling the Duchy of Prussia, and secured succession...

.

Spaen was born in the Duchy of Cleves

Duchy of Cleves

The Duchy of Cleves was a State of the Holy Roman Empire. It was situated in the northern Rhineland on both sides of the Lower Rhine, around its capital Cleves and the town of Wesel, bordering the lands of the Prince-Bishopric of Münster in the east and the Duchy of Brabant in the west...

 as the son of Bernhard von Spaen, the lord of Kreuzfort.

By 1650, Spaen served as a Landdrost

Landdrost

Landdrost was the title of various officials with local jurisdiction. It is of Dutch origin, with land- corresponding to the English meaning of an area, suggesting a somewhat larger jurisdiction than just a village or estate; and drost being a short form of Drossaard, one of many similar titles in...

, a government councillor, and an Oberst

Oberst

Oberst is a military rank in several German-speaking and Scandinavian countries, equivalent to Colonel. It is currently used by both the ground and air forces of Austria, Germany, Switzerland, Denmark and Norway. The Swedish rank överste is a direct translation, as are the Finnish rank eversti...

 (colonel), and he became the leader of a cavalry

Cavalry

Cavalry or horsemen were soldiers or warriors who fought mounted on horseback. Cavalry were historically the third oldest and the most mobile of the combat arms...

 regiment the following year. In 1654 he captured Dietrich Karl zu Wylich-Winnenthal, the leader of an uprising against Elector Frederick William

Frederick William, Elector of Brandenburg

|align=right|Frederick William was Elector of Brandenburg and Duke of Prussia – and thus ruler of Brandenburg-Prussia – from 1640 until his death. A member of the House of Hohenzollern, he is popularly known as the "Great Elector" because of his military and political prowess...

, and brought him to Spandau

Spandau Citadel

The Spandau Citadel is a fortress in Berlin, Germany, one of the best-preserved Renaissance military structures of Europe. Built from 1559–94 atop a medieval fort on an island created by the meeting of the Havel and the Spree, it was designed to protect the town of Spandau, which is now...

. Spaen led Prussia's Horse Guards (Leibregiment zu Pferde) during the Northern Wars

Northern Wars

Northern Wars is a term used for a series of wars fought in northern and northeastern Europe in the 16th and 17th century. An internationally agreed nomenclature for these wars has not yet been devised...

, participating in the Battle of Warsaw

Battle of Warsaw (1656)

The Battle of Warsaw was a battle which took place near Warsaw on , between the armies of the Polish-Lithuanian Commonwealth on the one hand and of Sweden and Brandenburg on the other. It was a major battle in the Second Northern War between Poland and Sweden in the period 1655–1660, also known as...

. The colonel was restationed on the Lower Rhine

Lower Rhine

The Lower Rhine flows from Bonn, Germany, to the North Sea at Hoek van Holland, Netherlands.Almost immediately after entering the Netherlands, the Rhine splits into many branches. The main branch is called the Waal which flows from Nijmegen to meet the river Meuse; after which it is called Merwede...

 in 1656. He became commander of Kalkar

Kalkar

Kalkar is a municipality in the district of Kleve, in North Rhine-Westphalia, Germany. It is located near the Rhine, approx. 10 km south-east of Cleves. The most famous building of Kalkar is its church St...

 on 27 May 1657 and was promoted to Generalmajor the following year. On 25 May 1661, Spaen received the title Freiherr

Freiherr

The German titles Freiherr and Freifrau and Freiin are titles of nobility, used preceding a person's given name or, after 1919, before the surname...

 from the Holy Roman Emperor

Holy Roman Emperor

The Holy Roman Emperor is a term used by historians to denote a medieval ruler who, as German King, had also received the title of "Emperor of the Romans" from the Pope...

.

From 1672-79, Spaen was a leader in Brandenburg-Prussia's campaigns against Sweden

Swedish Empire

The Swedish Empire refers to the Kingdom of Sweden between 1561 and 1721 . During this time, Sweden was one of the great European powers. In Swedish, the period is called Stormaktstiden, literally meaning "the Great Power Era"...

 and France

France

The French Republic , The French Republic , The French Republic , (commonly known as France , is a unitary semi-presidential republic in Western Europe with several overseas territories and islands located on other continents and in the Indian, Pacific, and Atlantic oceans. Metropolitan France...

. He participated in the sieges of Wesel

Wesel

Wesel is a city in North Rhine-Westphalia, Germany. It is the capital of the Wesel district.-Division of the town:Suburbs of Wesel include Lackhausen, Obrighoven, Ginderich, Feldmark,Fusternberg, Büderich, Flüren and Blumenkamp.-History:...

, Werl

Werl

Werl is a town located in the district of Soest in North Rhine-Westphalia, Germany.-Geography:Werl is easily accessible because it is located between the Sauerland, Münsterland, and the Ruhr Area...

, Anklam

Anklam

Anklam is a town in the Western Pomerania region of Mecklenburg-Vorpommern, Germany. It is situated on the banks of the Peene river, just 8 km from its mouth in the Kleines Haff, the western part of the Stettin Lagoon. Anklam has a population of 14,603 and was the capital of the former...

, and Stettin

Szczecin

Szczecin , is the capital city of the West Pomeranian Voivodeship in Poland. It is the country's seventh-largest city and the largest seaport in Poland on the Baltic Sea. As of June 2009 the population was 406,427....

, becoming Governor of Wesel and Generalleutnant in 1675. Four years later Spaen became a member of the Privy Council and Government President of Cleves and the County of Mark. He became Master of Ordinance (Generalfeldzeugmeister) on 1 December 1688. The following year he was a representative of the Margraviate of Brandenburg

Margraviate of Brandenburg

The Margraviate of Brandenburg was a major principality of the Holy Roman Empire from 1157 to 1806. Also known as the March of Brandenburg , it played a pivotal role in the history of Germany and Central Europe....

 at the English

England

England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

 court. During the War of the Grand Alliance

War of the Grand Alliance

The Nine Years' War – often called the War of the Grand Alliance, the War of the Palatine Succession, or the War of the League of Augsburg – was a major war of the late 17th century fought between King Louis XIV of France, and a European-wide coalition, the Grand Alliance, led by the Anglo-Dutch...

 against France, Spaen participated in the siege of Bonn

Bonn

Bonn is the 19th largest city in Germany. Located in the Cologne/Bonn Region, about 25 kilometres south of Cologne on the river Rhine in the State of North Rhine-Westphalia, it was the capital of West Germany from 1949 to 1990 and the official seat of government of united Germany from 1990 to 1999....

 and the Battle of Fleurus

Battle of Fleurus (1690)

The Battle of Fleurus, fought on 1 July 1690, was a major engagement of the Nine Years' War. In a bold envelopment the Duc de Luxembourg, commanding Louis XIV’s army of some 35,000 men, soundly defeated Prince Waldeck’s Allied force of approximately 38,000 men comprising mainly Dutch, German, and...

. He received supreme command of the electoral troops in 1690 and was promoted to Generalfeldmarschall on 12 March 1691. He died the following year at Kleve

Kleve

Kleve , is a town in the Lower Rhine region of northwestern Germany near the Dutch border and the River Rhine. From the 11th century onwards, Kleve was capital of a county and later a duchy...

.

Spaen was married three times: with Hendrine von Arnheim

Arnhem

Arnhem is a city and municipality, situated in the eastern part of the Netherlands. It is the capital of the province of Gelderland and located near the river Nederrijn as well as near the St. Jansbeek, which was the source of the city's development. Arnhem has 146,095 residents as one of the...

(died 4 August 1671); with Johanna Dorothea Quadt von Wyckerath-Soppenbroich (died 4 September 1676); and with Dorothea von Flammitz.