Cleon popped a very different looking cigarette into his mouth and lit it in about 2 seconds before bum rushing the opening of the dropship. 

He held his hand in the air, making the hand signal for a wedge formation and screamed, "BOUNDING OVERWATCH" to signal for everyone to get into formation. Soon everyone would start echoing him. If they were gonna make it through the battlefield, formations and team work was their only hope. 

"Stay close with the headquarters team, doc!" Cleon, being the squad main gunner was probably gonna be the one taking bullets for the rest of his team, making himself the target to keep the doc from dying while she saved lives. 

He called out to the new private Harvey, "C'mon! Stick with headquarters team, MARKSMAN! Everything's gonna be GREAT!" His false motivation might have been peaking out at the seams, but he kept up the facade, for those who watched him. "This is it, let's get started!"

A corporal was a fundamental part of a team. He was the NCO closest with the junior enlisted and a very important part of the chain of command. He was the first for a junior enlisted Marine to go to with any problems, and the one most trusted by his team. NCOs were the backbone of the Marine corp.