During the Second World War, the island was occupied by British Army and became "55 Military Prison". At least one execution of a criminal took place there during this time: 1474762 Gunner G.T. Huckell of the Royal Artillery was executed by firing squad on Nisida at 7.31 am on 23 May 1944. He was 26 years old and had been convicted of murdering and robbing an Italian civilian named Rudolfo Mastrominico. Huckell was subsequently buried in Plot II, Row E, Grave 3 at Naples War Cemetery.