The Sdkfz 251 armoured halftracks were originally created for carrying a platoon of infantry into battle along with the spearheading panzers.
As the war progressed, a wide range of more specialized vehicles were build using the halftrack as platform since these were cheaper to produce than tanks, and a lot of the tasks needed on the battlefield didn't require a fully tracked and heavily armoured platform.
One development was the sdkfz 251/9 "Stummel" (stump) seen here in the summer of 1944 during troop training in France (before the Normandy invasion)
The stummel mounted a short-barreled 75 mm gun and could provide some heavy fire support if the motorized infantry ran into strong enemy forces.
Babe - Nice bra.