Ships
- HMCS Uganda (66) Captain from 15 August 1944 · Relieved on 4 July 1946
Edmond Rollo Mainguy commanded Uganda from 15 August 1944 to 4 July 1946. He commissioned her as HMCS Uganda at Charleston on 21 October 1944 and had her for the whole of her war against Japan: the Sakishima strikes, the bombardment of Dublon, and the July operations off Japan, until HMS Argonaut relieved her on 27 July 1945.
Uboat.net gives his birth as 11 May 1901 at Victoria, British Columbia, and his death as 29 April 1979 at Nanaimo, British Columbia. It says it has no career note beyond the ranks, two decorations, and four commands.
Uboat.net's rank line is midshipman on 15 February 1919, acting sub-lieutenant on 15 December 1919, lieutenant on 9 May 1922, lieutenant-commander on 15 March 1929, commander on 31 December 1936, and captain on 1 June 1941. He was mentioned in despatches on 1 January 1941 and made an Officer of the Order of the British Empire on 1 January 1943.
As a commander he had the destroyer Assiniboine from 10 September 1939 to 2 April 1940, and then Ottawa from 2 April 1940 to 20 July 1941. Those commands are Atlantic stories of their own. Uboat.net next lists him in HMS Uganda from 15 August 1944 to 21 October 1944, and in HMCS Uganda from 21 October 1944 to 4 July 1946. He was already in command when she commissioned into the Royal Canadian Navy at Charleston. He took her home for the Tyne radar refit, out through the Mediterranean, where a torpedo exploded during maintenance at Alexandria, and on to Sydney on 9 March 1945. He had her when she joined Task Force 57 on 8 April, when she bombarded Miyako on 4 May, when she bombarded Dublon on 14 June, and when she covered the carriers off Japan from 16 July. On 27 July HMS Argonaut relieved the ship. Mason's note says Canadian legislation kept men who had not volunteered for the Pacific from serving on. The Department of National Defence says she reached Esquimalt on 10 August. Uboat.net keeps Mainguy in command until 4 July 1946, well after that refit. It does not name the officer who relieved him.
Uboat.net promotes him rear-admiral on 1 July 1947 and vice-admiral on 1 December 1951, and dates his retirement to 1 January 1956. It does not list the appointments. He died at Nanaimo on 29 April 1979.