Complex sentence: The Brazilian Air Force has a long history of parachute training, starting in 1943, in the former Alfonsos Field School of Aeronautics with Achile Garcia Charles Astor, acrobatics gymnastics instructor for the Cadets, and introducer of parachuting civil in Brazil.
Split into simpler sentences: The Brazilian Air Force has a long history of parachute training. In 1943, at the former Alfonsos Field School of Aeronautics, cadet gymnastics instructor Achile Garcia Charles Astor first introduced civil parachute training in Brazil.