Earth Fall Series by Raymond L. Weil

From USA Today Bestselling author of The Slaver Wars comes a new military science fiction series. The Trellixian Empire was constantly expanding, seeking new worlds for their ever-increasing population. If worlds were discovered with existing sentient populations, they were cleansed to make room for colonization. Hundreds of budding civilizations had been eliminated by Trellixian battle fleets. On Earth years in the past, a scout ship fleeing from the Trellixians crashed... moreFrom USA Today Bestselling author of The Slaver Wars comes a new military science fiction series. The Trellixian Empire was constantly expanding, seeking new worlds for their ever-increasing population. If worlds were discovered with existing sentient populations, they were cleansed to make room for colonization. Hundreds of budding civilizations had been eliminated by Trellixian battle fleets. On Earth years in the past, a scout ship fleeing from the Trellixians crashed. Scientists investigating the wreckage discovered what the Trellixians had done to the world the scout ship escaped from. They also discovered it was only a matter of time before the Trellixians reached Earth. A daring plan was implemented involving the major world powers. They would prepare in secret for the coming of the alien invaders. The only question was, how could one world resist a galactic empire? less

In a desperate battle, Earth has temporarily freed itself from the clutches of the deadly Trellixian Empire. Billions are dead and it's only a matter of time before the enemy return. Seeking aid against the Trellixians, two exploration ships are sent out to search the galaxy for allies. If they fail, then the Human race is doomed. The Trellixians need Earth to colonize to help relieve the growing population pressure of their overcrowded home worlds... moreIn a desperate battle, Earth has temporarily freed itself from the clutches of the deadly Trellixian Empire. Billions are dead and it's only a matter of time before the enemy return. Seeking aid against the Trellixians, two exploration ships are sent out to search the galaxy for allies. If they fail, then the Human race is doomed. The Trellixians need Earth to colonize to help relieve the growing population pressure of their overcrowded home worlds. The Trellixians will not rest until every Human is dead and the Earth is theirs.On Earth, General Mitchell and Fleet Admiral Edwards prepare to fight their biggest battle. Every man and woman is being trained to use a weapon. However, their only real hope lies with two small exploration ships far away from home on a search for an ally that might not exist. less