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
United States Army officer rank insignia the gold leaf which the major had been wearing on the shoulder strap. In the same year, the bars on the shoulder straps of the captains and first lieutenants were changed from gold to silver. By 1917 and the time of World War I, the olive drab service uniform had gradually become used more frequently and the blue uniform was worn only on formal dress occasions. As a result, metal insignia was authorized for wear on the service uniform on the shoulder loop and on the collar of the shirt when worn without a jacket. Shortly after the United States