This was an early attempt to provide armoured support artillery by mounting a 150mm Sig 33 gun complete with wheels and gun carriage on a Panzer 1 chassis . 38 of these vehicles were made and served in France and the early stages of the Russian campaign.
Marder III Pak 40 Auf M was a modified Panzer 38t produced in large numbers , 975 were produced from mid 1943 onwards . It served on all fronts and equipped both armoured and infantry divisions in the panzerjager role until the end of the war.
The Stug III Ausf F mounted a long barrelled 75mm cannon and was fitted with improve armour . This vehicle, introduced in March 1942 to combat the rising numbers of T34 tanks used by the Russian army and was deployed in independent Sturmgeschutz Brigades used to support infantry units in attack and defence.
The 1 ton half track mounting the 20mm flak 38 anti aircraft gun was used by flak companies of Panzer units throughout the war and was frequently employed in a ground support role.
The Stug G was an improved version of the Ausf F in that it mounted a shield to give protection to the machine gunner and was fitted with a cupola for the commander. Another recognition feature of the later models was the Saukopf cast gun mantlet. This vehicle served in Sturmgeshutz units until the the end of the war.
Wespe 105mm SP introduced in late 1943 equipped the artillery units of armoured formations serving in this role until the end of the war.