The Research Office of the Reich Air Ministry was the signals intelligence and cryptanalytic agency of the German Nazi Party from 1933 to 1945. Run since its inception by Luftwaffe chief Hermann Göring, the Research Bureau was a Nazi Party institution rather than an official Wehrmacht-run military signals intelligence and cryptographic agency.

The 289th Engineer Combat Battalion was a combat engineer battalion of the United States Army during World War II. It served under XXI Corps of the Seventh Army in action mainly in France and Germany in 1944 and 1945. It received campaign credit for participation in the Ardennes-Alsace campaign , Rhineland campaign, and the Invasion of Germany.