 In 1905 the RML emplacements were replaced with two concrete pits for a pair of 6-inch breech-loading guns with a range of , with separate magazines constructed to support them.They were only emplaced for a few years and the fort was disarmed before the outbreak of the First World War in 1914.It became a Royal Engineers depot during the war and was rearmed in 1930 with a pair of replacement 6-inch guns, used to train the Territorial Army's Gravesend battery.