Based on the civilian WL model, Harley-Davidson's WLA ("A" for "Army") motorcycle was first produced in 1940. It would remain in production through 1945, and eventually over 90,000 weredelivered for use in all theaters of WWII. Like the WL, the WLA was equipped with a 45 cubic inch (740 cc) flathead high compression engine and arugged frame. Military modifications included blackout lights, fenders without traditional sides (to reduce mud clogging),...