As was usual for productions of the era, other equipment was substituted for original ones, though a number of the soft-skinned vehicles used by the Germans in the Spanish-filmed episodes are German or Italian Axis vehicles. The German armoured vehicles were actually American Patton tanks, M7 Priest self-propelled guns and M3 Half-tracks painted in desert sand colors. In the US-filmed episodes M35 2-1/2 ton cargo trucks replaced the more convincing vehicles used in Spain. Some of the US jeeps used by secondary characters are clearly post-war.