[5] In 1934, construction began on the Army Ammunition Institute in the Kampstüh Forest 2.4 km (1.5 mi) east Lehre.

More than 100 buildings on 225 hectares (556 acres) were constructed and was connected to the railway system.

The Institute produced ammunition for infantry weapons, anti-tank mines, tank shells, artillery guns and .38 cm.

On 11 April 1945, the area was liberated by the United States' 5th Armored Division and the Army Ammunition Institute was occupied without a fight.

This line officially ceased operation in 1998 following the opening of the Weddel loop which connected Wolfsburg and Braunschweig, bypassing Lehre.