The famous Sdkfz. 251 was a German halftrack that served in both troop transportation and offensive roles. Panzergrenadier troops had to keep up with their tanks during battle, and the armored 251 fit this role well.
The 251 was also used as an anti-infantry and anti-tank platform. The 251/22 was armed with a 20mm cannon turret, which could tear up light vehicles and unfortunate infantry. The 251/23 was equipped with a 75 mm Pak 40 anti-tank gun, further proving that the Germans wanted to make everything a tank. Of course, the 251/23 only had enough armor to protect troops from small-arms fire, so tank destroyer versions were pretty quick to get knocked out by enemy tanks. Poor guys.