Gods deriving power from followers, Lord Of light, Maker etc characters

khrm

Listens to The Unbeliever whine about life
#1
There are real gods in this world. Some of their names like Lord of Light, Maker, Lady (Of Something).

These gods derive power from their followers. Number of people and their faith determine their power.

One of the guys return to the military reluctantly. He is also some god. (Watcher maybe? Don't remember the exact name.)

In the end, we find that whole war was some conspiracy of Lord Of Light. Watcher threatens him that he will kill him if he try to gain power in this way. And tells why he killed the Maker. Maker has become too powerful and mad. So he asked watcher to kill him. Now when he reborn also, watcher kills him. Until he is ready to be born.
 

khrm

Listens to The Unbeliever whine about life
#3
One more thing I can recall is that protagonist fake his own death again. His squad thinks he is dead.