New recruits of the Vatican's elite Swiss Guard stand during the swearing in ceremony at the Vatican May 6, 2011. The Swiss Guard, founded in 1506 and consisting of 100 volunteers who must be Swiss, Catholic, single, at least 174 centimetres tall and beardless, celebrate their 503rd anniversary this year. New recruits are sworn in every year on May 6, commemorating the date in which 147 Swiss soldiers died defending the Pope during an attack on Rome on May 6, 1527.