The conflict intensified again in 1345 after two sons of Gediminas, Algirdas and Kęstutis, assumed power by ousting their brother, Jaunutis, who had been Gediminas's heir. The two shared control of the territory as a duumvirate: the land to the southeast was controlled by Algirdas and the land to the west (including Samogitia) was administered by Kęstutis. As a result, Kęstutis led most of the fight against the Teutonic Order, with mixed results. In 1349, Teutonic commander Winrich von Kniprode seized a victory against the Lithuanians in the Battle of Strėva, which was held in an open field.