|Edmond Rollo Mainguy|
|Born||May 1, 1901|
Victoria, British Columbia
|Died||April 29, 1979 (aged 77)|
Nanaimo, British Columbia
|Service/||Royal Canadian Navy|
|Years of service||1915–1956|
|Commands held||Chief of the Naval Staff|
|Battles/wars||Second World War|
|Awards||Officer of the Order of the British Empire|
Canadian Forces Decoration
With the start of the Second World War he took command of HMCS Assiniboine and then HMCS Ottawa before being promoted to Captain and taking overall command of Royal Canadian Navy (RCN) destroyers in Halifax in 1941. In 1942 he was appointed acting Commodore and took command of RCN destroyers in Newfoundland, quickly followed by an appointment to Ottawa as Chief of Naval Personnel. He returned to active duty as the commanding officer of HMCS Uganda in 1944. As a part of British Pacific Fleet Uganda took part in the Okinawa campaign.
In the post-war years Mainguy was appointed Flag Officer Pacific Coast in 1946, Flag Officer Atlantic Coast in 1948, and was the head of the commission that investigated the RCN insubordination incidents of 1949 before becoming Chief of the Naval Staff in 1951.
Mainguy married Maraquita Nichol, daughter of Walter Cameron Nichol, in 1927. Their son, Daniel Mainguy, later also reached the rank of Vice-Admiral, serving as Vice Chief of the Defence Staff from 1983 to 1985.
| Chief of the Naval Staff
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