Historical Picture of the Day- This day in WW2/The U-Boat threat

        This day in history, specifically during WW2 on October 30, 1941, the threat of u-boat attacks increases. Today's historical picture shows depth charges being readied for possible u-boat sightings. I think we do not really have a grasp on the mass scale the war had on the world. It was an all-out total war on both land and sea! During the early stages of the war, u-boats still had an advantage on the allies.