Officer Candidates Marine officer candidates spar with pugil stick during martial arts training at the Officer Candidates School at Marine Corps Base Quantico, Va., Feb. 23, 2018. Candidates go through three months of intensive training to evaluate if they have the leadership, moral, mental, and physical qualities required for commissioning as an officer. Marine Corps photo by Staff Sgt. Melissa Marnell SHARE: Download: Full Size (2.73 MB) Credit: Staff Sgt. Melissa Marnell VIRIN: 180223-M-DY697-0090C.JPG Photo Gallery