First Contact War

This is the story of war, but not between nations it is the story of war between two species
The Aliens came but they did not come in peace instead they brought death and destruction.
The story is based around two brothers, one a Marine, the oher a pilot and we follow them from the first contact with the alien race, and then as they continue to fight in space and in the trenches, on the frontline and in the atmosphere as earths forces try to keep the Aliens out of the cities, and population centres of the planet
It develops into a war of super weapons as each side resorts to using weapons of mass destruction.
Who will win?or more to the point can the human race survive?