 The three 6-inch guns of Battery Mitchell were dismounted in 1917 and sent to France for use on wheeled carriages; they were not returned to Fort Greble.None of the 6-inch gun regiments completed training before the Armistice of 11 November 1918 and thus did not see combat.Four of Battery Sedgwick's eight 12-inch mortars were dismounted in 1918 for potential use as railway artillery and to improve reloading efficiency.