Harley-Davidson WLA was a military motorcycle produced for the U.S. Army but also sold to other World War II allies—the Soviet Union was sold over 30,000 WLAs during WW2. The bike offered a solo seat and a 45 ci engine. WLA’s were produced between 1940 and 1952.
After the war, soldiers had little money but could afford a surplus WLA and so the WLA’s lead to the rise of the American motorcycle culture, the Harley culture, the chopper, and modified styles. Many of these vintage bikes can be found in museums around the world (the two photos of a WLA were taken in an exhibition in Berlin).
Harley also produced a version of this bike for the Canadian Armed forces, called Harley-Davidson WLC (the photo below taken in the National Motor Museum in Beaulieu, England).