The I Cavalry Corps participated in the failed Operation Spring Awakening in March 1945, the last major German offensive during World War II. After the failure of Spring Awakening, the I Cavalry Corps staged a fighting retreat towards Austria. After German surrender on 8 May 1945, the corps, still largely intact, was taken prisoner by British Army forces and transported to Württemberg and Hesse. Subsequently, the surrendered formations were formally dissolved by the United States Army in June 1945. The horses were confiscated by the Allies and repurposed for agricultural tasks.