Australia–Japan Research Project at the Australian War Memorial
The human face of war
South Seas Force: strength on 18 July 1942

Commander: Major General HORII Tomitarô

55th Infantry Group Headquarters
144th Infantry Regiment
55th Cavalry Regiment 3rd Company (less one platoon) plus 55th Cavalry Regiment Pom-pom Gun Squad
55th Mountain Artillery Regiment 1st Battalion
55th Engineer Regiment 1st Company plus Materials Platoon (part strength)
55th Division Signals Unit (part strength)
55th Supply Regiment 2nd Company
55th Division Sanitation Unit (part strength)
55th Division 1st Field Hospital
55th Division Veterinary Workshop (part strength)
55th Division Disease Prevention and Water Supply Unit (part strength)
(above units same as 16 May except for 47th Field Artillery (type B) Battalion (less one company))
15th Independent Engineer Regiment (less one company) plus Takasago Giyûtai
Army Signals Units
88th Independent Wired Company (part strength)
Independent Wireless Platoon
Fixed Wireless Platoon
24th Field Disease Prevention and Water Supply Unit (part strength )
Marine Transport Units
10th Independent Engineer Regiment (one company plus one platoon)
40th Sea Duty Company (less two platoons)
105th Sea Duty Company (one platoon)
120th Land Duty Company (one platoon)
37th Embarkation Headquarters
Marine Transport Signals Unit (part strength)