noun
khaki; olive drab
Refers to the khaki or olive-drab color historically used for Japanese military uniforms. Often associated with pre-war and wartime Japan.
戦時中、多くの学生は国防色の制服を着ていた。
During the war, many students wore khaki-colored uniforms.
カーキ色 is the modern, general term for khaki, while 国防色 carries a historical, military nuance specific to Japan.
Compound of 国防 (national defense) and 色 (color), referring to the color adopted for Japanese military uniforms.