New recruits of the Vatican's elite Swiss Guard march during the swearing-in ceremony at the Vatican May 6, 2013. The Swiss Guard, founded in 1506, consist of 100 volunteers who must be of Swiss nationality, Catholic, single, at least 174 cm (5.7 ft) tall and without a beard. They celebrate their 504th anniversary this year. New recruits are sworn in every year on May 6 to commemorate the day where 147 Swiss soldiers died defending the Pope during an attack on Rome in 1527. REUTERS/Tony Gentile (VATICAN - Tags: RELIGION TPX IMAGES OF THE DAY)