Cast aside all illusions and go into the battle.

丢掉幻想，投入战斗。

　　cast aside: Discard; throw away（置…而不顾；抛弃；去掉）
　　再如:
　　You can't just cast people aside like old clothes．
　　你不能象抛弃旧衣服那样扔下别人不管。