 Anchoring their stubborn defense around Mount Dabo, some 3,900 Japanese troops held off the U.S. 163rd Infantry supported by Filipino soldiers of the Philippine Commonwealth Army and Philippine Constabulary and other local Moro guerrillas.By 22 April, the Allies took the position after hard fighting and the rest of the troops fled and held out in the west for another two months.The 163rd suffered 40 dead and 125 wounded by mid-June, 1945, while some 2,000 Japanese perished.