The Japanese Army's 4th Regiment /4th Hiko Sentai/ was stationed from 1919 until 1930 at Tachiarai Air Base /Chikuzen town, Fukuoka Prefecture/, one of the largest air bases in Japan at the time, important for reconnaissance, resupply, and flight education during wars, and later as a flight school https://asiamedals.info/threads/tac...ol-graduation-commemorative-watch-fobs.28468/.
Main gate of the Tachiarai 4th Flight Regiment /太刀洗飛行第四聯隊 正門/.