Complex sentence: It took until 1942 before a court terminated the lease, thus releasing the FR. The legal decision followed the requisitioning of the WHR's track, locos and rolling stock, in the World War II scrap metal drive.
Split into simpler sentences: It took until 1942 before a court terminated the lease, thus releasing the FR from its obligation. This legal decision followed the requisitioning of the WHR's track, locos and rolling stock, in the World War II scrap metal drive.