It was the Duke of Wellington
Basically there were 2 armies, the Prussians under Blucher and the main allied army under Wellington. Each army was to be mutually supportable which is what happened at Waterloo, although the objective of Napoleon was to keep both armies apart and destroy each one separately.
At the Battle of Tours; a Christian army commanded by Charles Martel defeated an invading Muslim army commanded by Abdul Rahman Al Ghafqi.
The North - The Union army was commanded by Gordon Meade.
The Confederate Army of Tennessee, commanded by General Braxton Bragg.
It was a tribute to the young officers of Wellington's Army.
The Allied army won the Battle of Waterloo. It was composed of British, Belgian, Dutch, German and Prussian soldiers. Only about 25,000 were British.
George Washington commanded the Continental army at yorktown.
It is a tribute to the young officers serving in the British Army.
Confederates, both times - the Army of Northern Virginia, commanded by Robert E. Lee.
Longstreet and Bragg pushed Rosecrans back to Chatanooga.
The Union Army of the Potomac commanded by Major General George B. McClellan won the battle along Antietam Creek.
Waterloo?