The Imperial Japanese Army (大日本帝国陸軍?) is Japan's primary military ground force until the end of World War II. They are involved during the Third Fuyuki Holy Grail War, coming into conflict with the German Third Reich for control over the Holy Grail.


Within the world of Fate/stay night, the Japanese Imperial Army fought against the Third Reich for the Greater Grail, but both sides were unsuccessful.

Within the world of Fate/Apocrypha, they were unable to stop the Third Reich from stealing the Greater Grail.

Within the world of Fate/KOHA-ACE, Oda Nobunaga takes control of the force during the Imperial Capital Holy Grail Strange Story.