defeat (to win against someone in a fight, competition, game, etc.): The army was ready to defeat the rebels.
beat spoken (to win against someone in a fight, competition, game, etc.): I can beat her at chess.
overcome (to defeat; succeed in dealing with a problem): They have finally overcome the enemy. She is able to overcome this problem.
conquer (to overcome by force): We have conquered our enemies.
vanquish (conquer, overcome): He has vanquished every foe.
rout formal (to defeat someone completely): The national army was routed.
overpower (to overcome by having greater power): The troops were able to overpower the attackers.
trounce (to defeat easily and completely): We trounced them 11-0.
best informal (to defeat or outdo): He easily bested his opponent.
lick informal (to beat; to overcome): We can lick the other teams. He has licked the problem.
It should read “the troops were able to overpower the attackers” .
Corrected. Thank you!