Another crosshatching practice, a sturmgeschutz III
Just a little fact, while the StuG III was considered self-propelled artillery it was not initially clear which arm of the Wehrmacht would handle the new weapon. The Panzertruppe, the natural user of tracked fighting vehicles, had no resources to spare for the formation of StuG units, and neither did the infantry branch. It was agreed, after a discussion, it would best be employed as part of the artillery arm.
Honestly, the original drawing only had 5 roadwheels, and the 6th wheel was added later with MS paint