From April 20 to May 3 1953, Operation Little Switch allowed the exchange of the sick and wounded prisoners of wars between the United Nations, North Korea, and China. In this letter, Major General Choi informs General Harrison that the communist have failed to return hundreds of U.N. POWs because of their broad interpretation of the agreement. General Choi provides a series of steps to improve this agreement but most importantly he urges that the terms “civilian internees” and “displaced person” should be clarified in the Draft Armistice Agreement.