The Commanders of the Allied Enemy armies were unable to get any report of what had happened to the planes that went to attack Boston. They waited until the next day; and when not a plane returned and there was no report of any kind, decided that the same fate had befallen them as at the attack on Detroit; that the Americans certainly had something by which they were destroying every ship and plane which attacked them. This was unusual and unheard of. The fact that thousands and thousands of planes had attacked Boston and not one had escaped capture or destruction, made it plain that Yankee ingenuity had discovered something that was turning the tide of war in their favor. They now knew that they had made the greatest mistake by not pressing us hard after the fall of Chicago. They should have refused to grant the 15 days' armistice without demanding the surrender of the Eastern Coast. Another great mistake was the long delay between the attack on Detroit and the attack on Boston. This had enabled the Americans to get better prepared. There was no denying the painful truth. Something must be done and done quickly. They decided to order every plane that could possibly be spared from the Pacific Coast and from the lines extending from New Orleans to St. Louis and Chicago; to concentrate a supreme attack upon New York and Washington, making Washington the final goal. Planes were concentrated and mother ships anchored out in the Atlantic Ocean to prepare for the attack upon New York City. This was to be the greatest battle in all history.