Halo, Master Chief/John 117, Infinite Logo, MD Blue T-Shirt.

Text on back:

From warship duels to close-quarters combat, the United Nations Space Command (UNSC) serves as Earth's sword and shield among the stars. For over four centuries it has served as the military arm of the Unified Earth Government (UEG), deploying interstellar military assets to explore worlds, quell rebellion, and resist alien invaders.