Halo: Feet First

Halo: Feet First covers the story of a team of UNSC Orbital Drop Shock Troopers of the 7th Battalion, 105th Shock Troops Division. The main character, Duncan Iris, faces the full horror of the covenant war effort against humanity as well as the brave retaliation of outnumbered and outgunned UNSC forces. However, he also witnesses the turning of the tides as the war progresses. — Description from novelcodex.org