<Li> <P> The President's Bodyguards is an elite household cavalry regiment of the Indian Army . </P> </Li> <P> The President's Bodyguards is an elite household cavalry regiment of the Indian Army . </P> <Li> <P> Air India One is the call sign of any aircraft carrying the president . The aircraft are operated as VIP flights by the Indian Air Force . </P> </Li> <P> Air India One is the call sign of any aircraft carrying the president . The aircraft are operated as VIP flights by the Indian Air Force . </P>

Who served as both president and vice president of india