Iinuma Sadakichi

was a Japanese military officer of the Imperial Japanese Army and former member of the Byakkotai of the Aizu Domain.

History He lied about his age to join the military, and was assigned to the Byakkotai division - essentially a reserve division of young teenagers only meant to be deployed in emergency. He was the sole survivor of group after the Byakkotai committed suicide on Iimori Hill during the Battle of Aizu. The events were not widely known at the time due to the victorious Imperial army not wishing to glorify rebels.

After the war Sadakichi relocated to Sendai. He served in the Ministry of Communications and Imperial Japanese Army. He only related the incident much later as an older man, after the tensions of the Boshin War had cooled. It is through him that the events of the Byakkotai suicide at Iimori are known.

After his death, his ashes were spread on Mount Iimori together on the buried graves of his Byakkotai comrades.