<P> Cross of Sacrifice or War Cross, from a Commonwealth War Graves Commission cemetery (1920) </P> <Li> <P> A wooden cross at Coventry Cathedral, constructed of the remnants of beams found after the Coventry Blitz </P> </Li> <P> A wooden cross at Coventry Cathedral, constructed of the remnants of beams found after the Coventry Blitz </P> <Li> <P> Cross in Valle de los Caídos near Madrid, the highest cross in the world (Juan de Ávalos 1959) </P> </Li>

Where did the symbol of the cross come from