 One 9.2-inch and one 6-inch gun on a disappearing mounting remained in the eastern wing battery before being removed in 1907.During the war the fort was used as a Battery Command Post operating in conjunction with a Port War Signal Station located to the fort's east, which was responsible for monitoring all shipping entering or leaving the Thames.The remaining two 9.2-inch guns were removed in 1917 and reinstalled at Fletcher Battery, a newly built position on the Isle of Sheppey.