Korpsabteilungen were created in three waves, the first and largest one with five Korpsabteilungen (A to F) on 2 November 1943 in Army groups Süd and Mitte and A, a second with Korpsabteilung F in March 1944 at Heeresgruppe A, and the third with Korpsabteilungen G and H at the end of July, early August 1944, after the devastating losses suffered by the Wehrmacht in Operation Bagration.