The german concept of blitzkreig depended on close interaction between all of the branches of the armed forces: armor, aircraft, artillery, and infantry. Modes of transportation for infantry prior to World War II had seen little change in a century (aside from some experimentation in World War I). Germany, however, realized the need for a fast, effective means of transportation for the infantry. To this end trucks and halftracks were used. By and large halftracks proved superior because their excellent cross-country performance allowed the infantry to keep pace with the armor. During the war many halftracks were modified to perform a variety of roles including fire-support vehicles and engineer vehicles.
15cm Panzerwerfer 42 auf Maultier
Truck with Panzer II Suspension