Nave moved to Central Bureau in mid-1942 from the combined Australian Navy/U.S. Navy operation in Melbourne known as FRUMEL, which came under U.S. Navy control (Lt Rudy Fabian) in mid-1942. Fabian thought Nave had breached security, and got rid of Nave and the civilians (including Professor Thomas Room, who also went to Central Bureau); the Holden Agreement specifically stated that Eric Nave was not to work at FRUMEL, indicating that Fabian had "friends in high places". Although Nave headed up the "Solutions" division there, most records indicate he personally dealt with minor Japanese naval codes and simple substitution ciphers in spite of his Japanese language capability and long history with Japanese codes. However Duffy wrote that Nave was actively working on JN-25 until the day he was expelled from Monterrey. Colonel Sinkov and his American staff worked on the high-level Japanese Army codes. Central Bureau did not break any high level Japanese Army codes until mid-1943 success with the Water Transport Code. In January 1944, one main line Japanese Army code was broken with help from a buried trunk found at Sio, New Guinea, left by retreating Japanese Army troops of the 20th Division. The Bureau spent a day drying the damp pages, and the flood of decoded messages that ensued meant that MacArthur has to ask the US Navy for assistance (the Japanese thought that the papers had been destroyed). On 20 July 1942, General MacArthur moved his headquarters to Brisbane. A separate American intelligence operation was located nearby in a building called "Palma Rosa" at 9 Queens Road, Hamilton. "Palma Rosa" was commandeered by the Counter Intelligence Corps, G-2 Section, Headquarters U.S. Army Forces in the Far East (U.S.A.F.F.E.). Central Bureau also relocated to Brisbane in September, with the American contingent of six officers and eighteen enlisted men moving first. The bureau moved to the suburb of Ascot, not far from the new American airfield at Eagle Farm Airport. Staff were accommodated as boarders in private homes or in military camps with daily transport by truck or bus. Officers obtained rented accommodation around Ascot and nearby suburbs. Mic Sandford the head of the Australian Army contingent rented a house at 50 Elderney Terrace in nearby Hamilton; this became a social centre and the scene of frequent dinner and drinking parties. The CB headquarters was in "Nyrambla", a huge house at 21 Henry Street built as a grand mansion