One secret military unit tried to contaminate the drinking water of the refugees.一个秘密军事分队企图污染难民的饮用水。Our military unit was activated soon after the start of the war.战争爆发后不久我们分队便被派往前线。Our military unit was called into action at the start of the war.我们分队在战争伊始就奉命参加战斗。