Being an avid Francophile, of English ancestry, and strongly anti-Germany, Hassam enthusiastically backed the Allied cause and the protection of French culture. The Hassams joined with other artists in the war relief effort from nearly the beginning of the conflict in 1914, when most Americans as well as President Woodrow Wilson were decidedly isolationist. Hassam even considered volunteering to record the war in Europe, but the government would not approve the trip. He was even arrested (and quickly released) for innocently sketching naval maneuvers along the city's rivers. In addition to the time he gave to many committees, several of his flag pictures were contributed to the war relief in exchange for Liberty Bonds. Although he had great hopes that the entire series would sell as a war memorial set (for $100,000), the pictures were sold individually after several group exhibitions, the last at the Corcoran Gallery in 1922.