History of the Inventor: The Engineer and Pioneer Corps included the Pioneer Battalions, each made up of four companies. They had to perform certain technical tasks, particularly in the construction of river crossings, blasting operations and field reinforcement. In the 1st World War, the mine launcher, gas combat, heavy current and flame launcher formations were set up within this framework. Inventory description: The Engineering and Pioneer Corps included the Pioneer Battalions, each consisting of four companies. They had to perform certain technical tasks, particularly in the construction of river crossings, blasting operations and field reinforcements. While the pioneers originally formed the mother weapon of the railway, intelligence, motor vehicle, airship and air force troops, in the First World War the mine-throwing, gas-fighting, high-voltage and flame-throwing formations were added to the pioneer troops. Characterisation of content: The present tradition consists primarily of war diaries (often only parts or copies) that have been preserved by chance, individual battle reports, troop orders, location maps or sketches. State of development: Findbuch Vorarchivische Ordnung: The files of the Prussian Corps of Engineers and Pioneers were largely destroyed in the fire at the Potsdam Army Archives in 1945. Only a few fragments of files have been handed down and archived. In 1994, some fragments of files from the military archives of the former GDR were added to the remaining files kept in the Freiburg Military Archives. The preserved files of the former Bavarian, Württemberg, Saxon and Baden troops can be found in the responsible main state archives in Munich, Stuttgart and Dresden as well as in the General State Archives in Karlsruhe. Scope, explanation: Stock without increase 8.9 m 344 AU Citation method: BArch, PH 14/...