1. Platoon Organization

Platoon of the United States Marine Corps.
Photo Credit: Wikimedia Commons
2. Weapons

An army soldier with the M-320 grenade launcher.
Photo Credit: Wikimedia Commons
3. Fires support

Snipers from Marine Expeditionary Unit,
Photo Credit: Wikimedia Commons
4. Different specialties

Marine Force Recon.
Photo Credit: Wikimedia Commons
5. Elite

U.S. Army soldiers during a nighttime combat mission in Afghanistan.
Photo Credit: Wikimedia Commons