Heeresgruppe F
Both sides reorganised their armies in Palestine during the stalemate and appointed new commanders. The Yildirim Army Group (also known as Thunderbolt Army Group and Army Group F) was established in June, commanded by the German Empire General Erich von Falkenhayn. General Archibald Murray was sent back to England, replaced by Edmund Allenby in June to command the Egyptian Expeditionary Force. Allenby created two separate headquarters, one stayed in Cairo to administer Egypt, while his battle headquarters was established near Khan Yunis. He also reorganised the force into two infantry and one mounted corps. By 28 October 1917 the ration strength of the EEF fighting troops was 50,000. There were a further 70,000 unattested Egyptians.