Prince Yi Eun (also known as Prince Ri Gin in Japan) served in the Imperial Japanese Army as Commanding Officer of the 59th Regiment, the 4th Depot Division, and then later the 51st Division.
Pangeran Yi Eun (juga dikenal sebagai Pangeran Ri Gin di Jepang) bekerja di Angkatan Darat Jepang sebagai Petugas Komandan resimen ke-59, Divisi Depot ke-4, Divisi ke-51.