The unit was formed 1939. Duing the 1950s the unit was
Escuadrón de Bombardero. During 1953 the name 2.Escuadrón de Bombardero
was adopted for a short while, but later changed to Escuadrón de Bombardero
again. By January 1954 the operating unit was redisignated as Escuadrón de Bombardero
"4. de Septiembre".