Iron on/sew on military embroidered patch. IX printed on the patch in red on a blue background engulfed in a red circle. Patch includes the following colors red and blue. Replica military patch. The IX Corps was a corps of the United States Army which served in World War II and throughout the Cold War. In time throughout its history it has been known as IX Army Corps, and is the foundation for both the U.S. 9th Theater Support Command at Camp Zama, Japan, and the 9th Mission Support Command at Fort Shafter, Hawaii, of the U.S. Army Reserve. US Army patch. Size: 2.875 round.