This is a chronological list of military conflicts in which Polish armed forces won or took place on Polish territory from the reign of Mieszko I (960–992) to the ongoing military operations.
This list does not include peacekeeping operations (such as UNPROFOR, UNTAES or UNMOP), humanitarian missions or training missions supported by the Polish Armed Forces.
The list gives the name, the date, the Polish allies and enemies, and the result of these conflicts following this legend:
During the Middle Ages, Poland sought to incorporate other Slavic peoples under the rule of the Polan dukes, such as Mieszko I, Boleslaw I Chrobry and their descendants, and then defend the lands acquired in the west from the Holy Roman Empire. In the east and south it struggled with Ruthenia, Bohemia and Hungary, and Tatar raiders. In the north-east, it encountered intermittent Lithuanian and Prussian raids.
For much of its early history as a Christian state, Poland had to contend with Pomeranians, Prussians, Lithuanians and other Baltic peoples in continuous border wars without clear results or end in sight. After the Teutonic Order conquered and assimilated the Prussians, it began incursions into both Polish and Lithuanian territories. This represented a far greater threat to both Poland and Lithuania, and the two countries united in a defensive alliance by the crowning of the Lithuanian Duke Jogaila as King of Poland (as Władysław II) which led to a major confrontation at the Battle of Grunwald in 1410 and subsequent wars until 1525, when the Order became a vassal to the Polish Crown.