fleeing helter-skelter;throwing away everything in headlong flight(/one's helmet and coat of mail)
丟盔棄甲棄（卸）diū kuī qì jiǎ
盔：打仗時(shí)用來保護(hù)頭部的帽子，一般多用金屬制成；棄：扔下；甲：古代作戰(zhàn)時(shí)，用皮革或金屬制成的護(hù)身服。形容打敗仗后狼狽逃竄的情形，連盔甲兵器都扔掉了。throw away everything in headlong flight, fly pell-mell, throw down one’s arms run like sheep, throw away one’s shield and armour