The Germans needed command and control vehicles to work with their tanks and keep the commanders up front with the panzers. The commanders would need additional radios and places for maps.
The Panzerbefehlswagen I was a command vehicle that was a box structure on a PzKpfw I chassis. An early variant had a small turret in the top of the superstructure but was soon discontinued due to it taking up space.
The radios had a range of 6 miles for voice and 8 miles for Morse code.
For close support there was a machine gun installed.
The machine gun used a KgZF2 gun sight.