England - Camberley - Female Sandhurst officer cadet during endurance race

With a grimace on her pained face, a female Officer Cadet at the Royal Military Academy Sandhurst splashes through a water obstacle during an endurance race. Recruits are running a 5 mile steeplechase around the Academy grounds to assess individual stamina and accumulate team points. Sandhurst is an institution which has bred staff officers since 1800. Today it trains future officers for the demands of leadership and military understanding of military understanding. Students are tested for their command instincts, intellect, strength of character and physical endurance often under great psychological pressure - the demands asked of them in modern warfare. Failure in this test might not necessarily mean dismissal though perseverance or refusal to give up won't harm their prospects. (Photo by In Pictures Ltd./Corbis via Getty Images)