The Mosquito Squadrons of 464 Squadron RAAF, 487 Squadron RNZAF, and 21 Squadron RAF that attacked the Gestapo prison at Ameins on 18 February 1944,Operation Jericho, allowing 255 prisoners to escape, though 182 were recaptured.

Couple from my country,not the greatest of all time.But most of the best have arleady been posted here.
101
Sayert Matkal
Shaytet 13
Golani,givati,paratroopers(tzanchanim).(all battelions).

Originally Posted by Capt Frogman

Any troop/unit I commanded.

The Senior Regiment of the British Army!. Of course.

Buenos Aires citizens during the British invasions of the Río de la Plata. Poorly armed, barely trained and suffering from a numerical disadvantage, they were able to repel what was then the largest and most powerful empire in the world.

Originally Posted by Légionnaire

And what's about the Fallschirmjäger in WW2 who fought at Crete, in North Africa or in Italy???

Glück ab!
Légionnaire

The also fought in Normandy. One of my father's buddies fought them at Ortona. He said they were fiercest troops he had ever gone up against. After 40 years he only had respect for the Fallschirmjager.

Turkish Janissaries, South American Infernale cavalry, Paraguayan soldiers of the Chaco War. Little known but, very capable.

The Selous Scouts from the Rhodesian war. Very impressive capability.

The 5th Marine Division participated in the Battle of Iwo Jima where they sustained the highest number of casualties of the 3 Marine divisions that fought there. The 5th Division received the Presidential Unit Citation for extraordinary heroism on Iwo Jima. Hell on Earth.

[ame="http://www.youtube.com/watch?v=KBuXgQRz3II"]www.youtube.com/watch?v=KBuXgQRz3II[/ame]

I would also have to say the 1st Mar Div in WWII with Guadalcanal, Cape Gloucester, Peleliu, and Okinawa to their credit. All these battles were brutal and the division recieved 3 Presidential Unit Citations from these campaigns.

I would also give a shout out to the 3rd Marine Division from 66-68 in Vietnam that fought a constant, brutal, and largely conventional fight against what was considered the best light infantrymen in the world at the time, the North Vietnamese Army.

I may be a soldier, but I certainly give respect to my Marine brothers in combat....even with their bombastic propaganda machine.

I'm gonna go with the Finns against Russia during the 1940 winter war .