Most of what we know about him, is from the book Fashion Drawing in Vogue. He was stationed in Paris during the German occupation.
Vogue writes about La Mode: "The importance of Frivolous Things and an extraordinary clutch of drawings by Bernard Blossac, one for each year of the war, to show that the work of Couture and the chic life somehow went on, though the Nazi flag might be flying along the Rue de Rivoli, the Germans striding through the Place Vendome, the soldiers waiting on the Metro platform.
Such admissions were open to misunderstanding and misrepresentation, and the success with which French resilience and ingenuity fashioned so many silk purse out of whatever sows ears came to hand, upset some Allied opinion. To survive at all, let along in style, can be a kind of victory.
Then, first with Blossac and then others, there appear the latest Paris fashions, the silhouettes of 1945, the very latest hats, les robes d'hotesses, unabashedly luxurious and indulgent for these freer exhibition - and at last Les Cahiers de Publicite Couture, an advertising portfolio of drawings by Blossac, and others."