The US Department of Defense has removed from command Lieutenant General Charles Costanza, commander of the US Army's V Corps, ABC News reported. The zone of responsibility of the Army's V Corps includes organizing operations in Europe and maintaining US military presence on NATO's eastern flank. The importance of the V Corps grew amid the conflict in Ukraine because it helps coordinate military aid to the Kiev government. Costanza was supposed to leave his post two months later, ABC News said. The reasons behind his early dismissal are unknown.