The Sturmtiger was product of lessons learned. It was the anti dote to urban fighting hell, a weapon that could demolish sniper hiding structures with a single shot. It had a telescopic sight and was armed with a 380mm breech loading rocket launcher and mortar. It could fire projectiles ¾ of a mile away. The 275 pound shaped-charge Raketen Hohladungsgranate 4582 was used against fortifications and could penetrate 8 feet of reinforced concrete. Each shot could bring down a building. It only carried 14 of these long rockets or mortars, though. The launching charge was so powerful exhaust gasses had to be vented through special ducts. Each firing was accompanied by a tremendous flash. Each firing meant the vehicle had to be moved since the flash revealed its position.
The ammunition was so deadly and technical the best estimates for production capacity was 300 rounds a month.
The Germans built 19 and then the war ended.