Battle for Proxima — Michael G. Thomas

Battle for Proxima is the fourth book in the epic 'Uprising' series, part of the growing Star Crusades universe that chronicles humanity's first interstellar confederation that is torn apart by religious strife and extremism.

In this latest book of the Star Crusades Uprising series, the Confederacy is on its knees. Months of war have lost them most of the populated colonies and more will surely follow. Spartan, now a Lieutenant in the Marine Corps has been given his own special platoon, the Vanguards. Using the best weapons and armour in the Confederate arsenal, his unit is thrown back to the Bone Mill to locate information that could change the war.

After months of battle and many defeats, the fleet and ground forces under the command of Admiral Jarvis assemble for Operation Perdition. Intelligence gathered by the Vanguards confirms the next target. Admiral Jarvis must strike or the Echidna Union will take yet another world. Scores of capital ships and thousands of soldiers and marines ready themselves for their greatest battle yet. The Confederacy needs to turn the war around and drive the Union troops from the lost colonies. With heavy casualties arriving every day, it comes to the newly formed Jötnar battalions to make up the numbers. These powerful but inexperienced warriors must tip the balance in favour of the fragile Confederacy.

The 12-book Star Crusades series includes:
 
STAR CRUSADES UPRISING
Siege of Titan (Star Crusades Uprising, Book 1)
Tears of Kerberos (Star Crusades Uprising, Book 2)
Fires of Prometheus (Star Crusades Uprising, Book 3)
Battle for Proxima (Star Crusades Uprising, Book 4)
Fall of Terra Nova (Star Crusades Uprising, Book 5)
Slaves of Hyperion (Star Crusades Uprising, Book 6)

STAR CRUSADES NEXUS
Legions of Orion (Star Crusades Nexus, Book 1)
Machine Gods (Star Crusades Nexus, Book 2)
Heroes of Helios (Star Crusades Nexus, Book 3)
The Great Betrayal (Star Crusades Nexus, Book 4)
Prophecy of Fire (Star Crusades Nexus, Book 5)
Call to Arms (Star Crusades Nexus, Book 6)
 
These titles are also available as combined trilogies including:
STAR CRUSADES UPRISING: THE FIRST TRILOGY
STAR CRUSADES UPRISING: THE SECOND TRILOGY
STAR CRUSADES NEXUS: THE FIRST TRILOGY
STAR CRUSADES NEXUS: THE SECOND TRILOGY

For more information visit the official Star Crusades website. Keyword Starcrusader.