The battle of Khartoum/ Omduruman
Britain, Prussia, Holland, New Brunswick, and Nassau combined to beat Napoleon.
Toussaint L'Ouverture
It depends on what war/battle you are talking about. Britain did defeat France a couple times, but France retaliated.
Battle of Yorktown...
Alexander the Great defeated numerous great armies during his conquests. Some of the notable victories include the defeat of the Persian Empire led by Darius III at the Battle of Gaugamela, the conquest of the Egyptian and Persian forces at the Battle of Issus, and the defeat of the Indian army led by King Porus at the Battle of Hydaspes. These victories solidified Alexander's status as one of history's greatest military commanders.
The battle of Britain
Battle of yorktown
Radar and the courage of the RAF pilots.
It was the first German defeat and it showed that Britain was in for the duration.
Defeat of the German/Nazi forces in WW2.
Battle of Yorktown
If you mean to defeat enemies in war, their armies used various battle formations, siege equipment, and above all the superiority of their men in the ranks.