Second contact war

This is book two in the first contact war series and it takes place Ten years after the initial contact and the invasion of Earth. After the first war it was always known that the Aliens would return and so Earth had spent the time the they had been given developing new weapons and ships based on Alien Tech that lay scattered all across the planet and in space. They had also found out that the Aliens were also engaged in fighting another war with a Human type race and the search was underway to find these potential allies in the hope that they could help.
Time had run out now and the Aliens had returned in even greater force and the war was about to begin again. But this time it would not be for the planet and its resources but for the survival of the Human race.