The following blurb, entitled "Grenade Launcher Casts Line for Yanks Fishing in Pacific" features a novel way of fishing. The two soldiers pictured were Robert R. Sloop of Moorseville, NC (left) and Thomas P. Williamson of Padua, Kentucky (right). It was published in Popular Mechanics in January 1945.
Deep sea fishing, wartime style, at an Air Force base in Mariana islands is accomplished by adapting the line-carrying wooden float to a regulation grenade-launching rifle and shooting it out into the surf. The discharge of the combination hunting-fishing weapon carries the baited hook and line 200 yards.
-- Dr. Todd