on Cyprus on the evening of 21 June 1941, the date on which Mayne was accused of beating up a fellow officer, Major Charles Napier. Keyes had stayed the night elsewhere, and arrived at Salamis the following day, 22 June 1941, when the trouble was already over. Keyes states in his diary that he conducted an investigation and found Mayne responsible. Keyes' diary makes it clear that Mayne was brought before the divisional commander, Brigadier Rodwell, on 23 June, for assaulting Napier, the second-in-command of his battalion. Mayne had a grudge against Napier, who had not taken part in the Litani raid, and who, according to a serving member of 11 Commando, had shot Mayne's pet dog while Mayne had been away. Mayne was attached to his pet, and was furious about this. Keyes' diary records that, on the evening of 21 June, after drinking heavily in the mess, Mayne waited by Napier's tent and assaulted him when he returned. Keyes also records in his diary that Mayne was dismissed from 11 Commando the following day, 23 June, but does not say that he was arrested. SAS – 1941 and 1942 From November 1941 through to the end of 1942, Mayne participated in many night raids deep behind enemy lines in the deserts of Egypt and Libya, where the SAS wrought havoc by destroying many enemy aircraft on the ground. Mayne pioneered the use of military jeeps to conduct surprise hit-and-run raids, particularly on Axis airfields. It was claimed that he had personally destroyed up to 100 aircraft. His first successful raid at Wadi Tamet on 14 December 1941, where aircraft and petrol dumps were destroyed, helped keep the SAS in existence, following the failure of the previous initial raid behind enemy lines. For his part in the Tamet raid Mayne was awarded the Distinguished Service Order (DSO). He also received a mention in despatches on 24 February 1942. Mayne's official report on the Tamet raid notes: Mayne took part in the most successful SAS raid of the desert war when, on the night of 26 July 1942, with eighteen armed jeeps, he and Stirling raided the Sidi Haneish Airfield. They avoided detection, destroyed up to 40 German aircraft and escaped with the loss of only three jeeps and two men killed. Commanding officer Following Stirling's capture in January 1943, 1st SAS Regiment was reorganised into two separate parts, the