The 1st Cavalry Brigade of the Imperial Japanese Army was originally formed November 3, 1901.
It was assigned to Kwantung Army in April 1933 as part of the IJA Cavalry Group. It was then assigned with the Cavalry Group to the Northern China Area Army in June 1938. Again with the Group it was assigned to the Mongolia Garrison Army in February 1939.
Organization
1st Cavalry Brigade
13th Cavalry Regiment
14th Cavalry Regiment
Brigade Mounted Artillery Regiment
Later additions
Brigade Machinegun unit
Brigade Anti tank artillery squadron
Brigade Tank unit
Independent Infantry Battalion (motorized) Independent Engineer Squadron (motorized) 1st Mounted Artillery Regiment 71st Cavalry Regiment