This was the cotton khaki uniform of a Japanese soldier during World War II. The yellow bar on a red rectangle patch on the collars indicates that the uniform had been worn by a non-commissioned officer (NCO) – either a lance-corporal, corporal, sergeant pr sergeant-major. The pantaloons were typically bound to the knee with khaki tapes, a safeguard against the tropical conditions of fighting in the jungles of Asia and Southeast Asia, including Malaya and Singapore.