Quick excerpt from the novelization of God of War:
So it turns out that little montage from the end of God of War 1 totally still happened even though he got dethroned in God of War 2. Kratos can see literally every war across time and space from his throne as the god of war. Apparently he also had the ability to have languages that he didn't know be instantly translated in his head but I guess he lost that part before the newest game.
At the next step he finds himself almost flinching, as a huge bird with stiff metal wings and a spinning wheel in front dives down on him. Sudetenland. Huge explosions rock him as the machine - not a bird but a flying machine, a Stuka, another unfamiliar word that he somehow understands - pulls out of a dive and roars away into the dirty gray sky.
And Just above, a brilliant glare has him squinting and shading his eyes, but he knows somehow that this light cannot harm him, nothing can harm him. The light comes from a vast cloud curling upward from a burning city, burgeoning as it lifts into an astonishing shape, like a blazing white mushroom larger than Athens itself.
He looks in another direction and there before him unfold wooded hills where the rivers run red with blood. Antietam? What language might this be?
These people, these places, come to him with every step. Waterloo. Agincourt. Khyber Pass. Gallipoli, Xilang-fu. Roncesvalles. Stalingrad and the Bulge and Normandy. The chaos of war rages around him, an endless looping chain of stunning victories and horrific defeats
So it turns out that little montage from the end of God of War 1 totally still happened even though he got dethroned in God of War 2. Kratos can see literally every war across time and space from his throne as the god of war. Apparently he also had the ability to have languages that he didn't know be instantly translated in his head but I guess he lost that part before the newest game.