JAPAN STRATEGY SELF DEFENSE FORCE

A military force directly under the Defence Ministry of Japan. Triggered by the military conflicts between China and Vietnam over the Spartleys, it was formed by the Japanese government which had no military force of its own (all the army, navy and air force of the original Self-Defence Force had been incorporated in UN Force).
The English abbreviation is JSDF, which stands for Japan Strategy Self Defense Force. It was also often called "Senji" as its short form.
In ep.25 "Air", under the instruction from the Japanese government, one division of JSDF was deployed in an attempt to directly occupy the secret agency NERV.