The start of World War I meant that players started enlisting for the military to fight overseas. By 1915, World War I and PCHA raiding left the NHA without enough quality players. At first, the NHA and PCHA made peace with an agreement limiting PCHA signings of NHA players to those on teams designated by a 'draft'. However the peace did not last and disputes within the NHA and with the PCHA led to the end of the NHA. Two factions developed, Toronto and Quebec City, and the Montreal teams and Ottawa.