Και για να συνεχίσω και εγώ: In the early September of 1944, newly formed PzStuMrKp 1000, equipped with two Sturmtigers arrived in Warsaw. From August to December 1944, Alkett completed only 18 Sturmtigers which equipped four Panzer Sturmmorser Kompanie (PzStuMrKp) - 1000, 1001, 1002 and 1003, which served on the Western Front. Each company was to be equipped with 14 Sturmtigers. Seven took part in the Ardennes Offensive (PzStuMrKp1000 and 1001), while most of them took part in the defensive battles along the River Rhine. Sturmtigers proved be an excellent defensive weapon and had to be either destroyed by a heavy artillery bombardment or an air attack. It is reported that one single shot fired by Sturmtiger from PzStuMrKp 1001 completly destroyed three M4 Shermans.
Reference:
http://www.achtungpanzer.com/sttig.htm Additional information:
10 used in East with first action August 1944. Formed 3 companies the 1000, 1001, 1002. The 1000 and 1001 were used in the Ardennes offensive with 4 tanks each.
Company 1001 saw action in western Eifel. In March 1945 their last action was east of Bonn.
Company 1002 saw action in the Reichswald area. In March 1945 they moved to Rheinberg.