correct me if im wrong but didnt the british have the most powerful army ever in history. forgot which century but im pretty sure they dominated more than any other

Its hard to give one definitive answer to this.

The Romans?
Alexanders Greece?
The Mongols?
The British?

Just take a look at which Armies had the most influence. Which had the biggest Empires.

Hell. A controversial choice in this could be Hitlers Wehrmacht.

A good topic of conversation would be the greatest military victories.

The roman Army under Caeser was a killing machine! As were the greeks under Alexander!

I'm tagging this motherfucker!!

Alexander the great and his macedonians. While Genghis did conquer more land, the land was all empty.
I would also say these should qualify:
The 1945 soviet military force
Napoleon's fusiliers
And of course the modern Chinese land army

However, military is getting smaller and smaller, replaced by more and more missiles and technological warfare.

The 'coolest' military force is a little too broad and just delves into opinion, really. Pretty much everyone is going to have a different opinion and that kind of already shows. heh

The Mongols still come across as the coolest as well for me, because that eventually lead to Kublai Khan. Not because he really had many military victories and the like, but because he supposedly created Xanadu, in Inner Mongolia.

http://en.wikipedia.org/wiki/Xanadu

Guy knew how to live.

Roman empire or perhaps the British empire (largest of all time).

The Macedonians conquered only the Middle East, while the Mongols took the Middle East, Eastern Europe, Central Asia, and North China.

Although as others have said, the British had their virtue. The difference with the British is that they tended to largely avoid major threats to their power, aside from Napoleon, Wilhelm II, and Hitler (and arguably Hitler and the Japanese did manage to off the British, just not to conquer them).

Battles?

Ill fight the British corner.

Trafalgar
Agincourt
Waterloo
Gravelines (Spanish Armada)
Rorkes Drift
Wembley 1966

There was no bias in the above list.

Other great battles... Hmm...

The Somme instantly springs to mind, just for the sheer number of losses on all sides. Awful, but defines "great".

The german war machine during world war 2 is one of my favourite fighting forces. (just looking at the army itself, and not the ones who commanded it)
First, they had the most badass tanks of the war. Second, they named these tanks after big cats, which is awesome. They had a lot of other cool hardware as well. And their aggressive blitzkrieg tactics and highly trained soldiers really made it the best military of the time, by far.

One of my favourite battles is the battle of Breitenfeld 1631. When Gustav II Adolf showed the potential of the military innovations he was implementing.

I also like the Second Arab Siege of Constantinople, because it reminds me of helms deep, or minas tirith. It's also so random, that a Bulgar army marched in thinking "let's fuck those byzantines up" and then ended up saving Constantinople from the caliphate.