Referring to the contribution of the Spanish Maquis to the French resistance movement, Martha Gellhorn wrote in The Undefeated (1945):

“During the German occupation of France, the Spanish Maquis engineered more than four hundred railway sabotages, destroyed fifty-eight locomotives, dynamited thirty-five railway bridges, cut one hundred and fifty telephone lines, attacked twenty factories, destroying some factories totally, and sabotaged fifteen coal mines. They took several thousand German prisoners and – most miraculous considering their arms – they captured three tanks. In the south-west part of France where no Allied armies have ever fought, they liberated more than seventeen towns.”