 Sevilla FC, started as a team made up of workers from the "Seville Water Works", while Atlético Madrid was, from 1939–1947, called Athletic Aviación de Madrid, having merged with Aviación Nacional of Zaragoza, founded in 1939 by members of the Spanish Air Force.The Portuguese conglomerate Companhia União Fabril (CUF) had also its own sports club, founded as a true works team in 1937.It was located in the Lisbon's industrial suburb of Barreiro, and was called Grupo Desportivo da CUF.