 Prince Gustav Albrecht served in the German Army in the rank of field officer/field-grade officer ("Ic-Stabsoffizier") with the title of "Rittmeister der Reserve" in the 23rd Panzer-Division.Nearly two months after his disappearance during Operation Bagration in June 1944, he was awarded the German Cross in Silver ("Kriegsorden des Deutschen Kreuzes in Silber") on 18 August 1944.Additionally, he was awarded the War Merit Cross 1st.