Littlehampton Redoubt, usually known as Littlehampton Fort, was built in 1854 to protect the entrance to the River Arun at Littlehampton on the south coast of England, against possible attack by the French under the Emperor Napoleon III. There had been a previous battery on the east bank of the river, but the new fort was built on the west bank. It consisted of a platform from which cannon could sweep the harbour mouth, with a barracks behind and a surrounding defensive ditch and wall. The fort was an innovative military structure, incorporating the new feature of a Carnot wall. Its active use as a fort was short at only about 20 years, owing to technical changes in armaments, but it was a precursor of the later Palmerston Forts and therefore is NOT the First Palmerston Fort as has been alleged. The Palmerston Forts were built after the 1860 commission. Littlehampton Fort is now in a ruinous and overgrown state but largely protected by the Ivy that now grows over the walls. Previous fortifications A battery was planned for the east bank of the Arun at Littlehampton in about 1587, but there is no record of it having been erected and no trace of it has been discovered. There was though a five gun battery at Littlehampton in the early eighteenth century. In 1756 the Seven Year War with France began and there was a concern about invasion. A battery was erected on the east bank of the river in 1760. This consisted of a bastion set at right angles to the river bank with seven guns which covered the river mouth and seafront. The rampart of this construction still remains incorporated into the amusement park called Harbour Park. Plans for a new fort In the 1840s both public opinion and MPs put pressure on the government to better fortify the south coast against a French attack. In 1846 the Duke of Wellington wrote a public letter to Sir John Burgoyne, Inspector of General Fortifications, expressing his concern about the lack of defensive works along the south coast. Also in 1846 Burgoyne produced a paper entitled “Observations on the Possible Results of a War with France, Under Our Present System of Military Preparation.” This was a vigorous confirmation of everything Wellington had argued. A copy of this paper was sent to Wellington who wrote back a letter to Burgoyne in