Conflict | Combatant 1 | Combatant 2 | Result | Emperor/King |
Otto I's raid on Poland (963) | Holy Roman Empire | Duchy of Poland | Victory | Otto I |
German–Danish War of 974 | Holy Roman Empire | Kingdom of Denmark Norwegian vasal | Victory | Otto II |
Franco-German War of 978-980 | Holy Roman Empire | West Francia | Status quo ante bellum | Otto II |
Otto II's raid on Poland | Holy Roman Empire | Civitas Schinesghe | Defeat | Otto II |
Slavic revolt of 983 | Holy Roman Empire | Wends Lutici Obotrite | Defeat | Otto II |
Polish-Saxon Invasion of Veleti (985) | Duchy of Poland Holy Roman Empire | Veleti | Victory | Otto III |
Polish–Bohemian War (990) | Duchy of Poland Holy Roman Empire | Duchy of Bohemia | Victory | Otto III |
Polish-German invasion of Veleti (992) | Duchy of Poland Holy Roman Empire | Veleti | Victory | Otto III |
Polish-German invasion of Obotrites (995) | Duchy of Poland Holy Roman Empire | Obotrites | Victory | Otto III |
German–Polish War (1003–1018) | Holy Roman Empire | Duchy of Poland | Peace of Bautzen | Henry II |
Bolesław I's intervention in the Kievan succession crisis (1015–1019) | Duchy of Poland Kingdom of Hungary Holy Roman Empire Pechenegs | Kievan Rus | Victory - Temporary victory for Sviatopolk and Boleslaw
- Polish sack of Kiev
| Henry II |
German–Polish War (1028–1031) | Holy Roman Empire | Kingdom of Poland Kingdom of Hungary (1029–1031) | Victory | Conrad II |
Emperor Conrad II's military campaign against Hungary (1030–1031) | Holy Roman Empire | Kingdom of Hungary (1029–1031) | Defeat - The Hungarians occupied Vienna
| Conrad II |
German-Hungarian Wars (1042–1043) | Holy Roman Empire | Kingdom of Hungary (1029–1031) | Victory | Henry III |
Henry III's military campaign against Hungary (1044) | Holy Roman Empire Peter Orseolo and his allies | The army of King Samuel Aba | Victory - Defeat of Samuel Aba, restoration of Peter
| Henry III |
War between King Peter and Prince Andrew (1046) | King Peter's army Holy Roman Empire | Prince Andrew's army Kievan Rus' | Defeat | Henry III |
Emperor Henry III's military campaigns against Hungary (1051–1052) | Holy Roman Empire Duchy of Bohemia | Kingdom of Hungary | Defeat | Henry III |
German-Hungarian border War (1056–1058) | Holy Roman Empire | Kingdom of Hungary | Stalemate | Henry IV |
Civil War between King Andrew I and his brother, Prince Bela (1060) | King Andrew I's army Holy Roman Empire | Prince Béla's army Kingdom of Poland | Defeat | Henry IV |
German invasion of Hungary (1063) | Holy Roman Empire | Kingdom of Hungary | Victory | Henry IV |
Saxon revolt of 1073–1075 | Holy Roman Empire | Duchy of Saxony | Victory | Henry IV |
Saxon revolt of 1077–1088 | Holy Roman Empire | German rebels | Victory | Henry IV |
German-Flemish war | Holy Roman Empire | County of Flanders | Status quo ante bellum | Henry V |
Henry V's expedition to Poland | Holy Roman Empire Duchy of Bohemia | Kingdom of Poland | Defeat | Henry V |
War of Bohemian Succession (1125–1140) | Holy Roman Empire | Duchy of Bohemia | Defeat | Lothair III |
Wars of the Guelphs and Ghibellines | Ghibellines' | Guelphs' | 1st phase:Peace of Constance (1186) 2nd phase:Stalemate (1392) | Frederick I Barbarossa Frederick II Henry VII Louis IV |
Wendish Crusade (1147) | | | Victory - March of Brandenburg reconquers Havelberg, County of Holstein expels its Wends
| Conrad III of Germany |
Second Crusade (1147–1150) | Holy Roman Empire Other Crusaders | Emirate of Damascus other Muslim and Pagan entities in East Central Europe, Iberia and the Near East. | Indecisive - Victories in East Central Europe and Iberia. Defeat in the Holy Land.
| Conrad III of Germany |
Frederick I's expedition to Głogów | Holy Roman Empire Duchy of Bohemia | Kingdom of Poland Cumania Old Prussians | Victory | Frederick I Barbarossa |
Third Crusade (1189–1192) | Holy Roman Empire Other Crusaders | Ayyubids | Victory | Frederick I Barbarossa |
Henry VI's conquest of Sicily | Holy Roman Empire | Kingdom of Sicily | Victory | Henry VI |
Crusade of 1197 | Holy Roman Empire | Ayyubid Sultanate | Victory | Henry VI |
Fourth Crusade (1202–1204) | Crusaders from: | In Europe: | Victory | Otto IV |
Prussian Crusade | Holy Roman Empire Other Crusaders | Baltic pagans:' Allies of Prussians: | Victory - Teutonic Knights gain control of Prussia
| Frederick II |
Anglo-French War (1213–1214) | Angevin Empire Holy Roman Empire County of Flanders County of Boulogne | Kingdom of France | Defeat | Otto IV |
Fifth Crusade | Crusaders: Levant: Military orders: | Muslim forces: | Defeat | Frederick II |
Sixth Crusade (1227–1229) | Holy Roman Empire including in Personal Union: | Ayyubids | Victory - Crusaders gains Jerusalem back
| Frederick II |
War of the Lombards | Holy Roman Empire Pro-Imperial faction in the Kingdom of Jerusalem Principality of Antioch and County of Tripoli Republic of Pisa Knights Hospitaller Teutonic Knights | Kingdom of Cyprus Anti-Imperial faction in the Kingdom of Jerusalem Republic of Genoa Knights Templar Papacy | Defeat | Frederick II |
Mongol incursions in the Holy Roman Empire | Holy Roman Empire | Golden Horde | Victory | Frederick II |
Great Interregnum[3] 1245/50–1273/5 | Hohenstaufen party | Welf party | Compromise | ? |
Hussite Wars (1419–1434) | Catholic Church, Crusades and Loyalists: Holy Roman Empire | Bohemian Wars: Hussite Movement | Indecisive - Eventual defeat for Radical Hussites, Victory for Moderate Hussites and Catholics
| Sigismund |
Austrian–Hungarian War (1477–1488) | Holy Roman Empire | Kingdom of Hungary | Defeat - The Black Army captures Vienna
| Frederick III |
Austrian–Hungarian War (1490–1491) | Holy Roman Empire | Kingdom of Hungary | Victory | Frederick III |
Italian War of 1494–1498 | 1494: Kingdom of Naples 1495: League of Venice Papal States Republic of Venice Kingdom of Naples Kingdoms of Spain Duchy of Milan Holy Roman Empire Republic of Florence England (1496–98) Margraviate of Mantua Republic of Genoa | Kingdom of France Duchy of Milan (before 1495) Duchy of Ferrara (officially neutral) | Victory | Maximilian I |
Swabian War (1499) | Holy Roman Empire Swabian League | Old Swiss Confederacy Three Leagues of the Grisons | Defeat | Maximilian I |
Italian War of 1521–1526 | Holy Roman Empire Spain England Papal States (1521–1523 and 1525–1526) | France Republic of Venice Papal States (1524–1525) Marquisate of Saluzzo | Victory | Charles V |
Knights' War | Holy Roman Empire | Brotherly Conventention of Knight's | Victory | Charles V |
German Peasants' War | Holy Roman Empire Swabian League | Peasant army | Victory | Charles V |
War of the League of Cognac | Pro-Habsburg: | League of Cognac: | Victory | Charles V |
Little War in Hungary | Holy Roman Empire Royal Hungary Kingdom of Croatia Spain Papal States | Ottoman Empire John Szapolyai's Hungarian kingdom Kingdom of France | Defeat | Charles V |
Conquest of Tunis (1535) | Spanish Empire Holy Roman Empire Kingdom of Portugal Papal States Knights of Malta | Ottoman Empire Kingdom of France | Victory - Sack of Tunis
- Muley Hassan of the Hafsid dynasty restored as client ruler of Tunis and Spanish-Imperial tributary.
| Charles V |
Italian War of 1542–1546 | Holy Roman Empire Saxony Brandenburg Spain England | France Ottoman Empire Jülich-Cleves-Berg Denmark-Norway (1542–1543) | Inconclusive | Charles V |
Schmalkaldic War 1546–1547 | Holy Roman Empire Habsburg Spain Habsburg Hungary Supported by: Papal States | Schmalkaldic League: Supported by: England | Victory | Charles V |
Italian War of 1551–1559 | | | Victory | Charles V |
Second Schmalkaldic War March–August 1552 | Imperial–Habsburg forces Holy Roman Empire | Protestant princes | Protestant victory | Charles V |
Long Turkish War (1593–1606) | | Ottoman Empire | Inconclusive | Rudolph II |
War of the Jülich Succession (1609–1614) | 1609–1610: Holy Roman Empire Principality of Strasbourg Prince-Bishopric of Liège Catholic League | 1609–1610: Margraviate of Brandenburg Palatinate-Neuburg United Provinces Kingdom of France Protestant Union | Treaty of Xanten | Rudolph II Matthias |
War of the Montferrat Succession | Supporting the Duke of Mantua: Duchy of Mantua Montferrat Tuscany (1613) Spanish Empire France (1613–14) Holy Roman Empire Kingdom of Naples Genoa | Supporting the Duke of Savoy: Duchy of Savoy Montferrat Tuscany (1613) France (1615–17) Venice | Victory | Matthias |
Uskok War | Holy Roman Empire Kingdom of Croatia Spain | Republic of Venice Dutch Republic England | Treaty of Madrid (1617) - Many Uskok pirates executed or exiled; Austrian garrison installed to check Uskoks.
| Matthias |
Thirty Years' War 1618–1648 | Imperial alliance prior to 1635[a] Post–1635 Peace of Prague | Anti-Imperial alliance prior to 1635[b] Post–1635 Peace of Prague | Defeat - Consequences
| Ferdinand III |
Upper Austrian peasant war of 1626 | Holy Roman Empire Bavaria | Austrian Rebels | Victory | Adam Von Herberstorff |
Austro-Turkish War (1663–1664) | League of the Rhine: Kingdom of France Holy Roman Empire Piedmont-Savoy Kingdom of Hungary Kingdom of Croatia Polish–Lithuanian Commonwealth | Ottoman Empire | Peace of Vasvár | Leopold I |
Franco-Dutch War (1672–1678) | | | Treaty of Nijmegen | Leopold I |
War of the Reunions | Spain Co-belligerent: Holy Roman Empire Genoa | France | Defeat | Leopold I |
Great Turkish War (1683–1699) | Holy Roman Empire Polish–Lithuanian Commonwealth Tsardom of Russia Republic of Venice Spanish Empire | Ottoman Empire | Victory - Treaty of Karlowitz
- The Habsburg monarchy wins lands in Hungary, the Principality of Transylvania and the Balkans.
- Poland-Lithuania captures Podolia.
- Russia captures the port of Azov.
- Venice captures Morea and inner Dalmatia.
| Leopold I |
Nine Years War (1688–1697) | Grand Alliance: Dutch Republic England Scotland Holy Roman Empire Spanish Empire Savoyard state | | Victory | Leopold I |
War of the Spanish Succession (1701–1714) | | | Indecisive - Treaties of Utrecht (1713), Rastatt (1714) and Baden (1714)
- Philip is recognized as King of Spain, but once more renounces any claim to the throne of France
- Austria gains the crowns of Naples and Sardinia as well as the duchy of Milan and the Spanish Netherlands
- Savoy gains the crown of Sicily which is soon to be exchanged with Sardinia
| Leopold I Joseph I Charles VI |
Rákóczi's War of Independence | - Swiss
- Germans
- Italians
- Spaniards
| Foreign mercenaries and volunteers: | Victory | Leopold I Joseph I Charles VI |
War of the Polish Succession (1733–1735) | | | Treaty of Vienna - Augustus III ascends the throne
- Bourbon and Habsburg territorial gains
| Charles VI |
Liège Revolution (1789–1791) | Prince-Bishops of Liège Holy Roman Empire Supported by: Prussia (1789–1790) | Liège rebels Republic of Liège (1789–1791) France (from 1792) Supported by: Prussia (from July 1790)[6] | Defeat - Foundation of Liège Republic (1789);
reversion to Prince-Bishopric(1791); annexation by France (1795) | Leopold II |
War of the First Coalition (mostly the Low Countries theatre) 1792–1797 | First Coalition: Dutch Republic Holy Roman Empire Great Britain Spanish Empire (1793–95) | Kingdom of the French (1792) French First Republic (from 1792) Spanish Empire (1796–97) | Defeat | Francis II |