Albrecht Wenzel Eusebius von Wallenstein, also von Waldstein, was a Bohemian military leader and statesman who fought on the Catholic side during the Thirty Years' War (1618–1648). His successful martial career made him one of the richest and most influential men in the Holy Roman Empire by the time of his death. Wallenstein became the supreme commander of the armies of the Imperial Army of Holy Roman Emperor Ferdinand II and was a major figure of the Thirty Years' War.
Johann Tserclaes, Count of Tilly was a field marshal who commanded the Catholic League's forces in the Thirty Years' War. From 1620–31, he had an unmatched and demoralizing string of important victories against the Protestants, including White Mountain, Wimpfen, Höchst, Stadtlohn and the Conquest of the Palatinate. He destroyed a Danish army at Lutter and sacked the Protestant city of Magdeburg, which caused the death of some 20,000 of the city's inhabitants, both defenders and non-combatants, out of a total population of 25,000.
The Catholic League was a coalition of Catholic states of the Holy Roman Empire formed 10 July 1609. While initially formed as a confederation to act politically to negotiate issues vis-à-vis the Protestant Union, modelled on the more intransigent ultra-Catholic French Catholic League (1576), it was subsequently concluded as a military alliance "for the defence of the Catholic religion and peace within the Empire".
Johann Reichsgraf von Aldringen was an Austrian soldier active before and during the Thirty Years' War.
Matthias Gallas, Graf von Campo und Herzog von Lucera was an Italian professional soldier during the Thirty Years' War. He distinguished himself in the first half of the war in service of the Catholic League, in the War of the Mantuan Succession, and as one of Albrecht von Wallenstein's Generals. After carrying out the dismissal and elimination of Wallenstein, Gallas became acting supreme commander of the Imperial Army three times between 1634 and 1647 but he never held the function or authority of a Generalissimo.
Peter Ernst, Graf von Mansfeld, or simply Ernst von Mansfeld, was a German military commander; despite being a Catholic, he fought for the Protestants during the early years of the Thirty Years' War. He was one of the leading mercenary generals of the war.
The Battle of Rain, also called Battle of the River Lech, took place on 15 April 1632 near Rain in Bavaria during the Thirty Years' War. It was fought by a Swedish-German army under Gustavus Adolphus of Sweden, and a Catholic League force led by Johann Tserclaes, Count of Tilly. The battle resulted in a Swedish victory, while Tilly was severely wounded and later died of his injuries.
The Battle of Breitenfeld or First Battle of Breitenfeld, was fought at a crossroads near Breitenfeld approximately 8 km north-west of the walled city of Leipzig on 17 September, or 7 September, 1631. A Swedish-Saxon army led by King Gustavus Adolphus of Sweden and Saxon Elector John George I defeated an Imperial-Catholic League Army led by Generalfeldmarschall Johann Tserclaes, Count of Tilly. It was the Protestants' first major victory of the Thirty Years War.
The sack of Magdeburg, also called Magdeburg's Wedding or Magdeburg's Sacrifice, was the destruction of the Protestant city of Magdeburg on 20 May 1631 by the Imperial Army and the forces of the Catholic League, resulting in the deaths of around 20,000, including both defenders and non-combatants. The event is considered the worst massacre of the Thirty Years' War. Magdeburg, then one of the largest cities in Germany, having well over 25,000 inhabitants in 1630, did not recover its importance until well into the 18th century.
Christian the Younger of Brunswick-Wolfenbüttel, a member of the House of Welf, titular Duke of Brunswick-Lüneburg and administrator of the Prince-Bishopric of Halberstadt, was a German Protestant military leader during the early years of the Thirty Years' War, fighting against the forces of the Imperial House of Habsburg, Habsburg Spain, and the Catholic League.
The Battle of Lutter took place on 27 August 1626 during the Thirty Years' War, south of Salzgitter, in Lower Saxony. A combined Danish-German force led by Christian IV of Denmark was defeated by Johan Tzerclaes, Count of Tilly, commanding an army of the Catholic League loyal to Emperor Ferdinand II.
The Battle of Höchst was fought between a Catholic League army led by Johan Tzerclaes, Count of Tilly and a Protestant army commanded by Christian the Younger, Duke of Brunswick-Lüneburg, close to the town of Höchst, today a suburb of the city of Frankfurt am Main. The result was a one-sided Catholic League victory. The action occurred during the Thirty Years' War.
The Treaty or Peace of Lübeck ended the Danish intervention in the Thirty Years' War. It was signed in Lübeck on 22 May 1629 by Albrecht von Wallenstein and Christian IV of Denmark, and on 7 June by Ferdinand II, Holy Roman Emperor. The Catholic League was formally included as a party. It restored to Denmark–Norway its pre-war territory at the cost of final disengagement from imperial affairs.
The siege of Stralsund was a siege laid on Stralsund by Albrecht von Wallenstein's Imperial Army during the Thirty Years' War, from 13 May 1628 to 4 August 1628. Stralsund was aided by Denmark and Sweden, with considerable Scottish participation. The lifting of the siege ended Wallenstein's series of victories, and contributed to his downfall. The Swedish garrison in Stralsund was the first on German soil in history. The battle marked the de facto entrance of Sweden into the war.
The Battle of Wolgast was an engagement in the Thirty Years' War, fought on 22 August (O.S.) or 2 September (N.S.) 1628 near Wolgast, Duchy of Pomerania, Germany.
The capitulation of Franzburg was a treaty providing for the capitulation of the Duchy of Pomerania to the forces of the Holy Roman Empire during the Thirty Years' War. It was signed on 10 November (O.S.) or 20 November (N.S.) 1627 by Bogislaw XIV, Duke of Pomerania and Hans Georg von Arnim, commander in chief of an occupation force belonging to the army of Ferdinand II, Holy Roman Emperor, led by Albrecht von Wallenstein. While the terms of the capitulation were unfavourable for the Duchy of Pomerania already, occupation became even more burdensome when the occupation force did not adhere to the restrictions outlined in Franzburg. Stralsund resisted with Danish, Swedish and Scottish support, another Danish intervention failed. Imperial occupation lasted until Swedish forces invaded in 1630, and subsequently cleared all of the Duchy of Pomerania of imperial forces until 1631.
Philipp von Mansfeld, was Graf von Mansfeld, Vorderort and Bornstedt who commanded troops during the Thirty Years' War. He first fought on the side of the Swedish Empire under his second cousin, was captured, changed allegiance and raised a navy for General Albrecht von Wallenstein. Later, he commanded troops as Feldmarschall of the Holy Roman Empire.
Francis Charles of Saxe-Lauenburg was a prince of Saxe-Lauenburg and a general during the Thirty Years' War.
The Swedish invasion of the Holy Roman Empire or the Swedish Intervention in the Thirty Years' War is a historically accepted division of the Thirty Years' War. It was a military conflict that took place between 1630 and 1635, during the course of the Thirty Years' War. It was a major turning point of the war: the Protestant cause, previously on the verge of defeat, won several major victories and changed the direction of the War. The Habsburg-Catholic coalition, previously in the ascendant, was significantly weakened as a result of the gains the Protestant cause made. It is sometimes considered to be an independent conflict by historians.
Johann Philipp Kratz von Scharffenstein was a German nobleman and field marshal, who fought during the course of the Thirty Years' War. He served with distinction in forces of both the Catholic League and Holy Roman Empire. His poor relationship with the Imperial generalissimo Albrecht von Wallenstein frustrated his plan of becoming the supreme commander of the League's forces. Embittered by this he defected to Sweden, where he attained the rank of field marshal. He was captured at the Battle of Nördlingen in 1634 and executed for treason a year later.
Denmark–Norway 
Holy Roman Empire 
Catholic League 
