An oldie but goodie- Sun Bin ambush of Pang Juan at Maling
Before the final battle, Sun Bin gave the impression of "frailty and retreat," inducing his rival Pang Juan to pursue and attack.
QUOTE
"Thus one who is skillful at keeping the enemy on the move maintains deceitful appearances, according to which the enemy will act." --- Sun Zi
Upon the arrival at a locale called Maling (Horse Trout Way), Pang Juan fell into an ambush laid by the army of Qi. The army of Wei was completely annihilated and Pang Juan committed suicide by cutting his throat.