Bob, I now believe that the Div.Pi.Komp.104 had two Flammenwerfertrupps in March 1917. Sorcers: Das 9. Badische Infanterie Regiment Nr.170 im Weltkriege, Ihlenfeld; Offenburg, 1926 Die Schlacht im Kreidekalk 1917, Otto Lais; Karlsruhe, 1942 (I will scan and post the actual pages of the books later) Trench Raid: Unternehmen "Scheinwerfer" March 20 1917 Location: (Karspacher Loch) Upper Alsace between Rhein-Rhone-Kanal and Altkirch Command: Oberst Ihlefeld, Commander of IR170 The three Stosstruppf?hrer: Leutnant d.R. F?ssler, commander of the 3./Masch.Gew.170 Leutnant Engelhardt, commander of 12./170 Leutnant d.R. Caroli, II.Batl.170 (wounded in the raid) The Stosstruppunternehmen used both Flammenwerfertrupps of Div.Pi.Komp. 104 commanded by a Pionier-Feldwebel (name unknown) It is mentioned that this was not the first action of the Flammenwerfertrupps of Pi.Komp.104 The Flammenwerfertrupp operating on the left of the Raid was pushed away and eliminated by the French defenders. Twenty french prisoners were taken along with three light machine guns and other items. In 1917 Div.Pi.Komp.104 and Div.Pi.Komp.103 belonged to the 52.Artillerie-Brigade of the 52.Division Later the Div.Komp.103 and 104 belonged to the new Stab-Pionier-Bataillon 37 of the 52.Division. Regards, Hardy