Year | War | Belligerents (excluding Denmark) | Outcome |
Allies | Enemies |
c. 770 | Harald Wartooth's invasion of Sweden | Denmark | Sweden | Victory - Harald Wartooth subjegates a majority of Sweden
|
c.770 | Battle of Brávellir | Denmark Wends Eastern Geats | Sweden Estonians Western Geats | Defeat |
793–1066 | Viking invasions of England | Norse Vikings | Kingdom of England | Victory (first phase) Defeat (second phase) |
810–811 | Invasion of Frisia | Danish Kingdom | Francia | Stalemate |
813 | Halfdan the Mild's revolt | Danish Kingdom | Halfdan the Mild | Revolt successful Denmark is expelled and Vestfold gains independence. |
838 | Battle of Hingston Down | Danish Vikings Cornwall | Anglo-Saxons | Defeat |
845 | Siege of Paris (845) | Norse Vikings | Francia | Viking victory |
851 | Battle of Aclea | Danish Vikings | Kingdom of Wessex | Defeat |
853 | Invasion of Courland | Danish Vikings | Curonians | Defeat |
859 | Viking raid on Nekor[1][2][3] (ca. 859) | Norse Vikings | Kingdom of Nekor | Viking victory - Vikings occupied Nekor for 8 days.
|
865–878 | Great Heathen Army's invasion of England | Norse Vikings Norse–Gaels | Anglo-Saxon kingdoms: Kingdom of Strathclyde Kingdom of Alba | Viking victory |
866 | Battle of Brissarthe | Danish Vikings Brittany | Francia | Viking victory |
880 | Battle of Thimeon | Danish Vikings | West Francia | Defeat |
881 | Battle of Saucourt-en-Vimeu | Danish Vikings | West Francia | Defeat |
882 | Siege of Asselt | Danish Vikings | East Francia | Defeat |
885–886 | Siege of Paris (885–886) | Danish Vikings | West Francia | Stalemate |
891 | Battle of Leuven (891) | Danish Kingdom | East Francia | Defeat - Death of Sigfried and Godfried
|
899–902 | Æthelwold's Revolt | Followers of Æthelwold ætheling Supported by: Danes of Northumbria Kingdom of East Anglia | Followers of Edward the Elder: | Defeat |
900s | Olof the Brashs conquest of Denmark | Danish Kingdom | Olaf the Brash | Defeat Victory for Olaf |
911 | Siege of Chartres (911) | Danish Vikings | West Francia | Stalemate |
939 | Battle of Trans-la-Forêt | Danish Vikings | West Francia Brittany | Defeat |
955–961 | War between King Haakon the Good and the sons of Eirik Bloodaxe | Sons of Eric Bloodaxe Kingdom of Denmark | Norway | Defeat |
974 | German–Danish War of 974 | Kingdom of Denmark Norwegian vassal | Holy Roman Empire | Defeat - Hedeby under German occupation from 974 to 981
|
mid-980s | Sweyn's revolt against Harald Bluetooth | Sweyn Forkbeard | Harald Bluetooth | Victory for Sweyn Forkbeard |
986 | Battle of Fýrisvellir | Kingdom of Denmark Jomsvikings | Sweden | Defeat |
986 | Battle of Hjörungavágr | Kingdom of Denmark Jomsvikings | Norway | Defeat |
986 | Norwegian-Jomsviking War | Kingdom of Denmark Jomsvikings | Norway | Defeat - Norwegian Victory
- Danish fleet destroyed
|
992 | Erik the Victorious invasion of Denmark | Danish Kingdom | Sweden | Defeat Swedish victory [4][5] |
mid-990s | Eric the Victorious invasion of the Holy Roman Empire | Danish Kingdom Sweden | Holy Roman Empire | Stalemate Stade and Northern Germany gets pillaged and plundered by Vikings. Eric, however, fails to permanently capture land in the Holy Roman Empire. |
1000 | Battle of Svolder | Kingdom of Denmark Sweden Earldom of Lade | Norway | Allied Victory |
1004 | Battle of Thetford | Kingdom of Denmark | Norway Anglo-Saxons | Anglo-Norwegian Victory |
1013 | Sweyn Forkbeards invasion of England | Kingdom of Denmark | Kingdom of England | Danish victory |
1015–1016 | Olav II's conquest of Norway (1015–1016) | Kingdom of Sweden Kingdom of Denmark Earldom of Orkney | Kingdom of Norway | Defeat |
1016 | Cnut the Great's invasion of England | Kingdom of Denmark
Kingdom of Norway | Kingdom of England | Dano-Norwegian victory |
1028 | Battle of Helgeå | Kingdom of Denmark Kingdom of England | Sweden Norway | Anglo-Danish victory - Subjegation of parts of Sweden
|
1028–1029 | Cnut's Invasion of Norway | North Sea Empire | Norway | Anglo-Danish victory |
1031 | Battle of Stiklestad | The "Peasant Army".loyal to Cnut the Great. | Norway | Peasant victory |
1043 | Magnus the Good's conquest of Denmark | Denmark | Kingdom of Norway | Defeat |
1043 | Battle of Lyrskov Heath | Norway | Wends | Norwegian and Danish Loyalist victory |
1043 | Norwegian-Wendish War | Norway | Wends | Norwegian and Danish Loyalist victory - Destruction the Viking fort Jomsborg, possibly to destroy the Danish competitors to the throne. Plundering of the Wendish town of Jumne.
|
1048–1064 | Invasion of Denmark | Denmark | Norway | Stalemate - Peace agreement, mutual recognition and Norwegian withdrawal.
|
1069–1075 | Danish attacks on Norman England | Denmark Earl of Northumbria | Norman England | Stalemate |
1086 | Peasant rebellion in Vendsyssel | Denmark | peasants | Defeat |
1093 | Battle of Schmilau | Prince Henry Denmark Saxony | Obotrites | Victory - Victory for the Christian coalition
|
1131–1157 | Danish Civil War (Civil war)[7] | Valdemar I of Denmark Canute V of Denmark | Sweyn III of Denmark | Valdemar Victory - Valdemar I is made king of all of Denmark
|
1144–1147 | Wendish Crusade | Denmark
Kingdom of Poland
Holy Roman Empire | Polabian Slavs West Slavs | Victory |
1168 or 1169 | Siege of Arkona | Denmark | Rani | Danish Victory - Rügen conquered and converted
|
1170 | Battle of Julin Bridge | Denmark | Pomerania | Danish Victory - entire army of Bogislaw scattered
|
1181 | Battle of Dösjebro | Royalists | Scanian rebels | Royalist Victory |
1182 | Harald Skraengs uprising | Harald Skraeng Sweden | Denmark | Victory Uprising quelled |
1184 | Battle of Greiswald Bay[8] | Denmark | Pomerania Supported by: Holy Roman Empire | Danish Victory |
1189–1192 | Third Crusade | Angevin Empire
Kingdom of France
Kingdom of Jerusalem Republic of Pisa
Kingdom of Sicily
Papal States
Holy Roman Empire
Duchy of Bohemia
Armenian Kingdom of Cilicia
Kingdom of Denmark
Republic of Genoa | Ayyubids - Sultanate of Egypt
- Emirate of Damascus
- Emirate of Hamah
- Emirate of Mesopotamia
| Crusader Victory |
1191 | Danish Crusade of 1191[9] | Denmark | Finnish tribes | Unknown result |
1192 | Invasion of Bishop Valdemar[10] | Denmark | DenmarkBishop Valdemar Supported by:
Sweden[11] Norway[12]
Hohenstaufen
Holstein
Ratzeburg
Brandenburg | Victory - Bishop Valdemar is imprisoned
|
1201 | Battle of Stellau | Denmark | County of Holstein | Danish Victory |
1201 | Danish Crusade of 1201 | Denmark | Finnish tribes | Indecisive - Conquered regions handed over to Sweden[13]
|
1203–1290 | Livonian Crusade | Sword-Brothers
Livonian Order
Denmark Sweden | Indigenous peoples | Victory |
1204–1208 | The Second Bagler War | Denmark Bagler Party | Birkebeiner | Peace |
1210 | Battle of Gestilren | Denmark House of Sverker | Sweden House of Eric | Defeat |
1210 | Invasion of Pomeralia | Denmark | Pomeralia | Danish Victory |
1225 | Battle of Mölln (1225) | Denmark | County of Schwerin | Defeat - Danish possessions in Germany rebels
|
1227 | Danish–German war | Denmark | County of Holstein Hanseatic League | Defeat |
1240–1242 | Livonian campaign against Rus' | Livonian Order Denmark | Novgorod Republic | Defeat |
1245 | Battle of Embo | Denmark Norway | Kingdom of Scotland | Defeat |
1250 | Expedition against Frisia | Denmark | Frisian rebels | Defeat |
1256 | Halland Campaign | Denmark | Norway | Peace treaty signed |
1259-1261 | The Archbishop War[14] | Margaret | Lund Archbishopric
Schleswig
Rügen | Defeat |
1274-1275 | The war against Valdemar Birgersson | Denmark Magnus III of Sweden | Sweden | Victory |
1276–1278 | 6000-mark war | Denmark | Sweden | Victory |
1289–1295 | Danish-Norwegian War | Denmark | Norway Danish outlaws | Defeat |