百战不殆

Explanation: Battle through many times, are not at risk. Described the good use of troops. 　　Usage: Contraction type; as predicate, object, attribute; with compliment, describing the fighting is to win every time 　　Source: Qin Sun Wu "grandson seek to attack": "Knowing your enemy, friend, know yourself." 　　Examples: He can size up the situation, police detailed the enemy, so the ~, people called him the blow. Thesaurus:  be in an invincible position;remain invincible