recognized for his artistic skills at a very young age, even if painting was not his first choice in career

However, when poor health left him unable to travel to university, he decided to pursue art, and enrolled in the École des Beaux-Arts in Lille. He began to cross paths which such painters as Signac and Matisse, and soon he was showing his works in the Salon des Indépendants and the Salon d’Automne. In 1931 Deltombe was appointed director of the École des Beaux-Arts de Nantes and would faithfully serve in that capacity until 1943. By the time he died in 1971, he had showed all over Europe, not just in solo and group exhibitions, but in retrospectives focused entirely on him and his work.