Recruits complete two months of gruelling physical tests and days of mock combat patrols to earn their place in elite fighting unit.
Two female soldiers have made history by becoming the first women to receive one of the most coveted distinctions in the US military.
The officers, Lieutenant Shaye Haver and Captain Kristen Griest, have been officially inducted into the US Army Rangers after completing one of the most demanding military training courses in the world.
This is the first year that US Army Ranger School has allowed women to attempt the gruelling months-long test of physical and mental ability and endurance.
The decision to allow women came after the Obama administration ordered the military to open all combat roles to women by the end of this year.
Nineteen women and 380 men began the course on April 20, and four months later two female West Point military academy graduates joined 94 men in completing all four phases.
More than one-third of would-be Rangers are eliminated within the first four days of Ranger School. Those that continue on face weeks of constant physical and mental examinations on limited rations and little sleep, trudging up mountains and through swamps.
