At the Battle of Shiroyama (depicted), the final engagement of the Satsuma Rebellion, the Imperial Japanese Army defeated rebel samurai of the Satsuma Domain led by Saigō Takamori.

The Battle of Shiroyama took place on 24 September 1877, in Kagoshima, Japan. It was the final battle of the Satsuma Rebellion, where the heavily outnumbered samurai under Saigō Takamori made their last stand against Imperial Japanese Army troops under the command of General Yamagata Aritomo and Admiral Kawamura Sumiyoshi. The battle culminated in the annihilation of Saigō and his army, marking the end of the Satsuma Rebellion. The Imperial Army's victory consolidated their power, and the Satsuma Rebellion was the last instance of internal mutiny seen in the Empire of Japan.

The Satsuma Rebellion, also known as the Seinan War , was a revolt of disaffected samurai against the new imperial government of the Empire of Japan, nine years into the Meiji era. Its name comes from the Satsuma Domain, which had been influential in the Restoration and became home to unemployed samurai after military reforms rendered their status obsolete. The rebellion lasted from 29 January until 24 September of 1877, when it was decisively crushed, and its leader, Saigō Takamori, was shot and mortally wounded.

The Imperial Japanese Army was the principal ground force of the Empire of Japan from 1871 to 1945. It played a central role in Japan’s rapid modernization during the Meiji period, fought in numerous conflicts including the First Sino-Japanese War, the Russo-Japanese War, World War I, the Second Sino-Japanese War, and World War II, and became a dominant force in Japanese politics. Initially formed from domain armies after the Meiji Restoration, it evolved into a powerful modern military influenced by French and German models. The IJA was responsible for several overseas military campaigns, including the invasion of Manchuria, involvement in the Boxer Rebellion, and fighting across the Asia-Pacific during the Pacific War. Notorious for committing widespread war crimes, the army was dissolved after Japan's surrender in 1945, and its functions were succeeded by the Japan Ground Self-Defense Force.