[6] In Ottawa, Dallaire become involved with Les Confrères artistes Le Caveau, working alongside Henri Masson.
[3] In October 1938 the government of Quebec gave him a grant that allowed him to go to Paris and study at Ateliers d'Art Sacré and the studio of André Lhote.
[8] During World War II (1939–1945), Dallaire and his father were placed in an internment camp after the German forces occupied Paris in 1940.
[2] Dallaire returned to Canada after the war and from 1945 to 1952 taught at the Ecole des Beaux-Arts in Quebec City.
[2] He was among the artists selected to decorate the interior of the Queen Elizabeth Hotel, owned by the Canadian National Railway, which opened in 1958.
Others were Marius Plamondon (stained glass mural), Claude Vermette (ceramic tiles), Julien Hébert (bronze elevator doors) and Albert Edward Cloutier (carved wooden panels).
[2] Despite his cheerful palette, his artificial paradise is peopled by troubled characters affected by fear, madness and violence.
"[8][a]Dallaire's eclecticism and attachment to figurative art have tended to make critics marginalize his work.