First Strike by Richard Turner
When war comes after a century of peace, it is sudden and brutal. Taken by surprise Earth's far-flung colonies are in danger. The only son of an admiral, Second Lieutenant Michael Sheridan finds himself thrust into a desperate conflict that he and the untried soldiers under his command are not ready for. Focusing on the people struggling to survive the onslaught, First Strike is a novel that propels the reader to the furthest limits of space. Fighting a ruthless and determined enemy, Sheridan soon learns the brutal lessons of war and that his enemy may not be what it appears to be.