The document summarizes the bombing of Guernica, Spain by German and Italian planes on April 26, 1937 during the Spanish Civil War. It describes the aircraft involved including Heinkel 111 bombers, Junkers 52 bombers, and fighter escorts. It estimates 45-50 planes dropped over 50,000 kg of bombs including incendiary and explosive bombs. The bombing destroyed the town within 2.5 hours. While death counts varied, it is now accepted that around 250 civilians were killed out of Guernica's population of 6,000. Pablo Picasso later memorialized the bombing in his famous painting "Guernica".