Ranks of the Imperial Japanese Army a colonel in the army: "Taisa" (colonel), so the rank of "Rikugun Taisa" denoted an army colonel, while the rank of "Kaigun daisa" denoted a naval captain. Ranks of the Imperial Japanese Army The following tables present the rank insignia of the Imperial Japanese Army before and during World War II. These designs were worn on shoulders as passants (shoulder straps) between the years 1911 and 1938, then on collars afterwards until 1945, when the army was dissolved. The same officer ranks were used for both the Imperial Japanese Army and Imperial Japanese Navy, the only distinction being the placement
Shoulder mark and affixed to the underside of the board. This effectively hides all the means of attachments, leaving a firm, finished surface. This particular style is what U.S. Air Force personnel call a "shoulder board". The shoulder sleeve is called an epaulette, and the two are never confused. On the United States Army Blue Service Uniform, officers wear embroidered rank insignia "shoulder straps" mounted lengthwise on the outside shoulder seams. These are 1⅝ inches wide by 4 inches/3½ inches (large size/small size) long, and are sewn, snapped, or clipped onto each shoulder. The Boy Scouts of America uses colored shoulder loops