The Southern Palestine offensive, began on 31 October 1917, with the Battle of Beersheba, when the British Empire's Egyptian Expeditionary Force under the Command of Field Marshall Edmund Allenby attacked Ottoman Empire forces at the Palestinian town of Beersheba during the Sinai and Palestine Campaign, of World War I. After the capture of Beersheba, by the EEF, the Gaza to Beersheba line became increasingly weakened and, seven days later, the EEF successfully forced the Ottoman Turkish Empire's Seventh and Eighth Armies to withdraw. Wikipedia