Halo series. Graphic novels

"Four Spartans. Team Black. Taken from their mothers' cribs, they trained side by side in a top-secret Navy program on the planet Reach. They formed a bond stronger than any civilian could conceive and no enemy would dare try to sever if they wished to live. And now they've crash-landed on a forbidding piece of rock floating in the middle of a well-known Covenant supply route. Two Covenant soldiers, Thon and Reff. Soldiers in the brutal war against...

Six-year-old John is taken away from his family and sent, along with seventy-four other children, to the planet Reach, where they are trained in the SPARTAN-II program to be supersoldiers loyal to the United Nations Space Command.