In World War II he registered as a conscientious objector , and created several well - known war posters , then became a camouflage designer in Halifax , Nova Scotia .
He was also a regular part - time instructor at the Ontario College of Art .
In World War II instructor registered as a conscientious objector , and created several well - known war posters , then became a camouflage designer in Halifax , Nova Scotia .
He was also a regular part - time instructor at the Ontario College of Art .