Evidence of prehistoric human activity within the civil parish consists of 19
barrows and the remains of 4 linear dykes. The most significant of the barrows is the 'King's Barrow' at Stoborough, which probably dates from the
Early Bronze Age. of
Charles II, dated 1684, found in Arne In
medieval times the parish of Arne was much smaller; it covered on the Arne peninsula and adjacent heathland. In the late 19th century it was expanded to include the two parts of Wareham Holy Trinity parish that separately covered Stoborough and Middlebere, and the part of Wareham Lady St Mary parish that covered Worgret, resulting in Arne parish more than doubling in size. During
World War I Holton Heath, three miles north west of Arne in the neighbouring parish of Wareham St Martin, was chosen as the site of the
Royal Navy Cordite Factory, a key site for the manufacture of explosives used in military shells. Its isolated location would have mitigated civilian losses should an explosion have occurred, but following the start of
World War II, the factory was a clear target for bombing raids by German aircraft. With the main flight path to Holton Heath passing right over Arne, the government created several
"Starfish" decoy sites in the village. These consisted of a heavily guarded site containing a network of tar barrels and pipes containing
kerosene that could be ignited when needed to give the appearance of a burning factory, thus confusing pilots into bombing empty countryside. On the night of 3–4 June 1942, the decoy was brought into action and aircraft heavily bombed the decoy site, causing a fire that burned for six weeks. The decoy operation was a success, leaving the Cordite Factory untouched, but Arne was devastated, with over 200 bomb craters counted on the Arne Peninsula. The Germans, on the other hand, were convinced they had heavily damaged the factory and even
Lord Haw-Haw reported that it had been badly hit. However, the village was left almost uninhabitable and the remaining occupants were given a month's notice that Arne was to be abandoned by 10 August. After the war, the village remained largely derelict until the late 1950s, and in 1966 the Arne Peninsula was put under the protection of the
RSPB. ==Geography==