As Army Times reports, the competition was established in 1982. Events are designed to test physical conditioning, ranger skills and team strategies. The events are scheduled back-to-back for 60 continuous hours. Events include weapons firing, road marches, day and night land navigation courses, ranger skills and parachute jumps. All events are timed and scored. Each team member must complete each event.
According to Army Times, only 23 out of 50 teams at the starting line finished the competition in 2013.