Greatest military units of all time

NOT the French Foreign Legion. My Grandfather, and original Anzac in World War 1, fought them in Syria in World War 2. He was a Colonel in the 2nd AIF. The FFL were Vichy traitors and collaborators. The Australian Army (2 AIF) defeated them and captured Damascus, Syria in 1942. This is a little known campaign.
Wellington. He defeated Napoleon, in Spain, in Palestine and Egypt, also at Waterloo, yet every one raves about Napoleon, and we wont mention what happen to him in Russia was he just a great publicity hound.