The God of War is one of the four Supreme Gods and is the second born. He is the physically strongest of all the gods and enjoys a good argument (fight) every now and again with either his elder brother or his little sister.
War's Titan is made of the strongest steel surrounded by fire as hot as the sun. The Titan cannot be touched as no one can get within 100m of it without getting burnt save for the Champion of War. The Champion of War is Immortal in every aspect except that he can only be killed in combat but should he be killed the man (or woman but not likely) becomes the next Champion hence why he can touch the Titan to commune with War's demands.
War's Domain is not a stable place like most gods but the battlefield. A constantly changing temple where his followers worship him. Sometimes he would make an appearance on the battlefield when the army he favours begins to loose dramatically or when he's just bored, in which case he will command Death to open a rift to the underworld surrounding the field so none can escape and then rise in the centre of the battle wearing nothing but a loin cloth. As he fought the countless enemies (sometimes from one army, sometimes from both) he would grab weapons and armour and start using them to fight. All who fought him bravely and ferociously would be resurrected and given long, healthy lives.