Some info from Achtung Panzer...

First unit to be equipped with Brummbars began forming in April of 1943. This unit was to receive 50 out of 60 vehicles already produced, while the rest was to be put in reserve. Newly formed unit - Sturmpanzerabteilung 216 was moved to Amiens area in France for training. The unit began moving to the Eastern Front on June 10th of 1943. Sturmpanzer IV Brummbaers had their debut with Sturmpanzerabteilung 216 (part of 656 sPanzerjaeger Regiment commanded by Lieutenant-Colonel Jungenfeld) as part of Army Group Mitte (Center) at Kursk (Summer of 1943). Sturmpanzerabteilung 216 took part in the first combat action on July 5th, but its elements continued arriving into battle as late as July 18th. Jungenfeld was awarded the Knight's Cross after Kursk and was promoted to full Colonel after battle of Charkov. After Kursk, unit was refitted and was back in action in September of 1943. Sturmpanzerabteilung 216 saw combat in Russia until mid December of 1943, when it was moved back to Germany for refitting. In February of 1944, unit was moved to Italy, to the area of Anzio and Nettuno. Sturmpanzerabteilung 216 remained in combat in Italy until April of 1945, when last Brummbars were destroyed by their crews at the area of Lake Garda.

Specifications
Weight: 28200kg
Crew: 5 men
Engine: Maybach HL 120 TRM / 12-cylinder / 300hp (early)
Maybach HL 120 TRM 112 / 12-cylinder / 300hp (late)
Speed: Road: 40km/h
Cross-Country: 24km/h
Range: Road: 210km
Cross-Country: 130km
Fuel Capacity: 470 litres
Lenght: 5.93m
Width: 2.88m w/o Schurzen
3.29m with Schurzen
Height: 2.52m
Armament: 150mm StuH 43 L/12 & 7.92mm MG34 (early)
150mm StuH 43/1 L/12 & 2x 7.92mm MG34 (late)
Ammo: 150mm - 38 rounds
7.92mm - 600 rounds
Armor (mm/angle): Front Superstructure: 100/40
Front Hull: 80/12
Side Superstructure: 50/15
Side Hull: 30/0
Rear Superstructure: 30/25+0
Rear Hull: 20/10
Top/Bottom Superstructure: 20/83 + 10/90
Top/Bottom Hull: 10/90


"We always were considered a 'fire brigade' unit, and always were used when the infantry was in trouble and lots of artillery had to be brought down at the enemy and fast. More than one infantry regiment blessed us after we had smashed a heavy attack of the enemy...Funny thing, though. As happy as the commanders of the supported units were when we smashed an enemy attack, the 'Landsers', the line infantry, were glad when we left, because enemy artillery fire was pounding them to hell while we were there. They could not change the locations of their fox holes, but we could move back and forth and sideways to escape enemy artillery at least to some extent" - Joseph Scharrer, 3rd Company of Sturmpanzerabteilung 216, from May of 1943 to October of 1944.

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"Watch that Fu*ker, he'll 'ave someones eye out!" King Harold at Hastings 1066.