One of the very first wargames ever published in Spain, along with "Rommel y Montgomery", "La Segunda Guerra Mundial" or "La batalla del Ebro", among others. I think it was published in 1981, although I bought it a year later. NAC published a second range of games a few years later, including "La Guerra de España" (1986), which is a different game about the same conflict.
Components are: a 64 x 88 cms board, 336 counters (Republican Army, International Brigades, National Army, CTV, Condor Legion, etc), rulebook, one dice and several sheets. As any other NAC game, it´s very easy to play.