Medal in need of identification

Another one of Dad's treasures in need of identification! Please help if you can! It is some type of brass medal, measuring 1.25" in diameter, that was likely attached to a ribbon or pin. The front of the medal has a large eagle flying over what appears to be a WWII era military truck with a 5-point star on the grill. On the back of the medal are what we believe are Chinese (?) letters or symbols (18 in total; 7 along the upper edge, 7 along the bottom edge. And 4 down the center). A proper translation will likely lead us to where this medal originated. Any help is much appreciated!