The Platoon Sergeant is an individual that is second in command of the Platoon.
His role is assisting the PL in any way possible, usually by lightening his communications responsibilities.
He is the 2IC of the whole Platoon, and as such it is critical for the Platoon Sergeant to be well trained and highly skilled.
He works closely with his PL and any attached liaisons.
The primary weapon of the Platoon Sergeant is his radio and he usually carries an assault rifle such as a M4, M4A1, AKM, AK-74.