Wootten later served on the Western Front. He was Brigade Major with the 11th Brigade, then with the 9th Brigade (under Brigadier General Charles Rosenthal). Wootten was awarded the Distinguished Service Order in October 1917 for staff work. He was then appointed to the staff of the 5th Division. In October 1918, he was appointed to the staff of Field Marshal Sir Douglas Haig, commander of the British Expeditionary Force on the Western Front. Wootten was mentioned in despatches four times.