Pagan Lithuania waged war with the Christian Orders for more than two centuries. The Orders were seeking to conquer Lithuania, stating that their motivation was the conversion of pagan Lithuanians to Catholicism. As Vilnius evolved into one of the most important cities in the state, it became a primary military target. The Castle Complex was attacked by the Teutonic Order in 1365, 1375, 1377, 1383, 1390, 1392, 1394 and 1402, but was never completely taken. The most damaging assaults were led by the Teutonic Order marshals Engelhard Rabe von Wildstein and Konrad von Wallenrode in 1390 during the Lithuanian Civil War (1389–1392) between Vytautas the Great and his cousin Jogaila. Many noblemen from Western Europe participated in this military campaign, including Henry, Earl of Derby, the future king Henry IV of England, with 300 knights, and the Livonian Knights, commanded by their Grand Master. At times during the civil war, Vytautas supported the Orders' attacks on the castles, having struck an alliance with them in his quest for the title of Grand Duke of Lithuania.