. . . . . "1st Battalion, 18th Infantry Regiment" . . . . "1944" . . "18." . . "1,720 survivors" . . . . . "18th Infantry Regiment" . . . . . . "18th Infantry Regiment (Imperial Japanese Army)" . . . . . . . . "1884" . . . . "18th Infantry Regiment (Imperial Japanese Army)" . "IJA 18th Infantry Regiment" .