to crawl under, pipes or tunnels to crawl through, walls to climb over, beams, walls or planks to balance on, steps to climb up, walls with window size holes to climb through, and mazes to negotiate. Overhead traverse (monkey bars) are popular. The Conseil International du Sport Militaire’s (CISM) Military Pentathlon Obstacle Course: There are 5 parts of the CISM Military Pentathlon: Shooting; Obstacle Swimming; Grenade Throwing; Cross Country Running and an Obstacle Course. The Obstacle Course is the signature event of the Military Pentathlon, and is 500 metres long with 20 standard obstacles: Rope ladder; Double beam; Trip wires; Crawl; Stepping-stones; Vault; Balance beam; Sloping wall with rope; Horizontal beams; Irish table; Tunnel and twin beams; Four steps; Ramp and ditch; Low wall; 2m deep Pit; Vertical ladder; High wall; Zigzag balance beam; Chicane; Three low walls close together. The women’s competition omits the rope ladder, sloping wall with rope, four steps and vertical ladder. International Naval Obstacle Course Competitions are similar and have additional naval type task such as closing and securing hatches. These competitions are run in sports clothing, and can be individual or team events with each team member covering a section of the course. The Military Pentathalon Obstacle Course are completed in around 2 minutes. The CISM Obstacle Course design is used by many armed forces around the world. Russian Federation Army Assault Courses usually have: a chicane; walls with holes to crawl through; widely spaced steps representing a broken staircase; balance beams representing a broken bridge; tunnels and often include throwing a dummy Hand Grenade from the final trench. Russian Assault Courses' often have monkey bars in an inverted V shape, higher in the middle. The Republic of Singapore Army's Standard Obstacle Course (SOC) dates from 1967, in 2010, the SOC was redesigned to provide realistic obstacles which may be found in either the jungle or urban battlefield. 6 old obstacles were removed (including the Monkey Bars which were known on the SOC as the Swing Trainer) and 7 new obstacles added. The new SOC has 12 obstacles: Low wall, stepping stones, rubble, tunnels, dodging panels, low rope climb, ditch, corridor, balance bridge, window, apex ladder, and terrace. The Swiss military assault course has 10 obstacles, the obstacles are similar to the CISM design: a double beam; a long crawl; a pit; stepping stones; a 3-bar vault; a zigzag balance beam; 2 sets of