Li Cunshen
During Li Keyong's 894 campaign against Li Kuangchou the military governor of Lulong Circuit (盧龍, headquartered in modern Beijing), Li Keyong deployed the tactic of facing Li Kuangchou's army headfirst himself, while having Li Cunshen circle around and attack Li Kuangchou's army in the back, leading to a rout of Li Kuangchou's army and Li Kuangchou's subsequent flight and death.