On October 28, 1936, during “The Spanish Civil War”, the PzKfw. 1As of the “Drohne” group of the “Condor” legion collided with Soviet T-26 tanks adopted by the Republicans. The machine guns and armor of the German machines turned out to be no match for the 45-mm gun and armor of the T-26. To increase the fire power of their vehicles, some German crews made some improvised field modifications. The turret was heightened, and an Italian made 20 mm “Breda” automatic cannon was added. The cannon was placed a little right of center for ease of use and service. Additional armour was added to give the crews better protection. Presumably, several vehicles were altered in this way, although there is only one surviving photo of the “Breda” in military literature.