Lone Soldier

Life on Lynop isn't bad for Doug Laisault, though interrupted with nightmarish visions. It is big news when the aliens first show up; in a few years, they help solve hunger, disease, and promise to advance technology of the planet through continuous, peaceful relations.
It is also big news when the aliens decide it is no longer the time for peace.

Doug and a few others escape with a critical device, then discover the galaxy is far more complex and dangerous than even the invaders demonstra...