 As industrial production in Canada ramped up, the inevitable shortages in agricultural labour has been met by a variety of new workers, from women to youth and even American farmers from the deep south who have already completed their harvests, coming north to help bring in a later harvest.The joint effort of Canadians from every walk of life who have come to understand that food is our "weapon of war", have brought in the largest harvest in Canada's history, twice as large as the year previous.Typical of the NFB's "Canada Carries On" series of documentary short films, "The Battle of the Harvests" was a morale-boosting propaganda film made in cooperation with the Director of Public Information, Herbert Lash.