Constellation of the Devil

After many skirmishes and four major fleet engagements, Admiral Willowdean "Willie" Halsey wants to strike at the home system of the evil Amferian devils to end the war once and for all. When an attack on the Batkan colony at star system Coral kills millions of humans, the people of Earth finally unite and authorize the attack. Read the other four books in the series also: 
"Natural Enemies: First Contact 2081" Evidence of War Book One
"Bonded By Fire: Behind Alien Lines" Evidence of War Book Two
"Star System Midway: Fleet Opposed Invasion" Evidence of War Book Three
"Return To Planet Sumer: Operation Shoestring" Evidence of War Book Four