Field Exercise A Marine Corps officer candidate walks through the woods during a field training exercise at Officer Candidates School at Marine Corps Base Quantico, Va., Jan. 24, 2020. SHARE IMAGE: Download Image: Full Size (1.65 MB) Tags: Marine Corps, Training Photo By: Marine Corps Lance Cpl. Piper Ballantine VIRIN: 200124-M-BU230-0086C.JPG Photo Gallery