Soldiers are fit. Being Army Tough is the result of tremendous physical fitness training. Until now, FM 21-20 has been used for decades to train America's Army to go to battle. TC 3-22.20 has replaced the old FM, giving soldiers new strength and endurance sustaining exercises. Now you can have this same intense level of fitness. Whether you are a soldier, civilian or on the Delayed Entry Program, you can learn to exercise properly. TC 3-22.20, US Army Physical Readiness Training shows you how.