After occupying Borneo and the islands of the Celebes and Ambon, Japanese forces turned their attention to securing Sumatra and Java. The occupation of these areas would mark the completion of the first phase of operations in the southern area and bring the abundant natural resources of the region under Japanese control. Units for the operation from the 2nd, 38th, and 48th Divisions staged from nearby islands and French Indo-China.
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Campaign name | Sumatra and Java campaigns |
Campaign dates | February – March 1942 |
Campaign codename | Sumatra: T Operation
Java: H Operation |
Campaign overview |
Frame 1 | Feb – Mar 1942
Japanese forces move from Camranh Bay, Borneo, and the Celebes to occupy Sumatra and Java, thus occupying a region rich in natural resources. |
Frame 2 | 14–15 Feb 1942
Japanese paratroopers and elements of the 38th Division secure the airfield and refineries around Palembang. The town is occupied by 17 February. |
Frame 3 | 19 Feb 1942
The Kanemura Detachment lands and secures the airfield at Denpassar, on Bali. Japanese aircraft quickly advance to support the Java operations. |
Frame 4 | 20–24 Feb 1942
The 229th Infantry Battalion moves south from Palembang, occupying southern Sumatra by 24 February. |
Frame 5 | 27 Feb 1942
An Allied naval force suffers heavy damage in an encounter with the Japanese invasion force. The battle of the Java Sea delays landings by one day. |
Frame 6 | 28 Feb 1942
While attempting to move through the Sunda Strait, Perth and Houston are met and sunk by the Japanese western invasion force. |
Frame 7 | 1 Mar 1942
The Sakaguchi Detachment lands at Kragan and occupies Tjilatjap by 7 March. Surabaya is captured the following day by the 48th Division’s main force. |
Frame 8 | 1 Mar 1942
The Shoji Detachment lands at Eretan. It occupies the Kalidjati airfield, then presses south towards Bandung. |
Frame 9 | 1 Mar 1942
The main strength of the 2nd Division lands at Bantam Bay. It moves on Bandung in two echelons, finally accepting the Allied surrender on 12 March. |
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Notes |
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Campaign strength | Southern Sumatra
Army
16th Army
38th Division
Lt Gen Sano Tadayoshi
38th Infantry Group Headquarters
229th Infantry Regiment (Col Tanaka Yoshisaburō)
38th Infantry Regiment (part strength)
Other units
3rd Army Air Corps
Lt Gen Sugawara Michio
Direct units
12th Air Brigade
1st Sentai 1st Squadron (fighters)
11th Sentai (fighters)
3rd Air Brigade
15th Independent Air Unit
59th Sentai (fighters)
64th Sentai (fighters)
27th Sentai (minus part strength, assault aircraft)
75th Sentai (light bombers)
90th Sentai (light bombers)
Navy
1st Southern Expeditionary Fleet
Vice Adm Ozawa Jisaburō
Escort Fleet (Rear Adm Hashimoto Shintarō)
Sendai, 3rd Torpedo Squadron
Yura, Shimushu
Support Group
Chōkai (flagship)
7th Squadron (Kumano, Suzuya, Mikuma, Mogami)
Aircraft carrier (Ryūjō), 2 special submarine tenders, 6 destroyers, etc
Air Unit
22nd Air Flotilla (Rear Adm Matsunaga Sadaichi)
Waterway Unit
9th Base Force (Rear Adm Hiraoka Kumeichi)
Paratrooper Unit (Palembang landing)
Northern Sumatra
Army
25th Army
Imperial Guards Division
Lt Gen Nishimura Takuma
5th Imperial Guards Regiment
Imperial Guards Reconnaissance Regiment
Imperial Guards Engineer Regiment
Imperial Guards Field Artillery Regiment (minus part strength)
6th Imperial Guards Tank Regiment (minus part strength)
Other units
Kobayashi Detachment
Maj Gen Kobayashi Takeshi
Imperial Guards Infantry Group Headquarters
3rd Imperial Guards Infantry Regiment
1st Imperial Guards Field Artillery Battalion
Other units
Kunishi Detachment
Col Kunishi Kentarō
4th Imperial Guards Regiment (minus part strength)
5th Mortar Battalion
6th Tank Regiment (one company)
15th Independent Engineer Regiment (minus part strength)
Other units
Yoshida Detachment
Col Yoshida Katsu
4th Imperial Guards Regiment, 3rd Battalion
15th Independent Engineer Regiment (one company)
Other units
Java
Army
16th Army
Lt Gen Imamura Hitoshi (Chief of Staff: Maj Gen Okazaki Kiyosaburō)
2nd Division
Lt Gen Maruyama Masao
2nd Infantry Group Headquarters
4th Infantry Regiment
16th Infantry Regiment
29th Infantry Regiment
2nd Reconnaissance Regiment
2nd Supply and Transport Regiment
Other units
38th Division
Lt Gen Sano Tadayoshi
229th Infantry Regiment
230th Infantry Regiment
38th Mountain Artillery Regiment
38th Engineer Regiment
Light Armoured Car Unit
38th Supply and Transport Regiment
Other units
Shōji Detachment
Col Shōji Toshishige
230th Infantry Regiment (minus one battalion)
4th Tank Regiment, 1st Company
38th Mountain Artillery Regiment, 3rd Battalion
2nd Independent Rapid-fire Gun Battalion (minus one company)
Engineer company
Anti-aircraft company
Eastern Detachment
Maj Gen Itō Takeo
38th Infantry Group Headquarters
228th Infantry Regiment (Col Doi Sadashichi)
38th Mountain Artillery Regiment, 2nd Battalion (minus one company)
48th Division
Lt Gen Tsuchibashi Yūitsu
48th Infantry Group Headquarters
1st Formosan Infantry Regiment
2nd Formosan Infantry Regiment
47th Infantry Regiment
48th Reconnaissance Regiment
48th Mountain Artillery Regiment
48th Engineer Regiment
Other units
Kanemura Detachment
Maj Gen Kanemura Matabei
1st Formosan Regiment, 3rd Battalion (minus one company)
One mountain artillery platoon
One independent engineer platoon
Sakaguchi Detachment
Maj Gen Sakaguchi Shizuo
146th Infantry Regiment
56th Field Artillery Regiment, 1st Battalion
Armoured car unit
Other units
Attached units
2nd Tank Regiment (minus light tank company)
4th Tank Regiment
17th Field Heavy Artillery Regiment (armoured)
2nd Independent Rapid-fire Gun Battalion
5th Independent Rapid-fire Gun Battalion
18th Field Air Defence Headquarters
16th Anti-aircraft Regiment
23rd Anti-aircraft Regiment (minus searchlight company)
44th Field Anti-aircraft Battalion
45th Field Anti-aircraft Battalion
48th Field Anti-aircraft Battalion
168th Motor Park Headquarters
138th Motor Park Headquarters
15th Signals Regiment
2nd Field Transport Headquarters
39th Independent Motor Car Battalion
102nd Independent Motor Car Battalion
28th Motor Car Regiment
45th Independent Motor Car Battalion
Other units
3rd Army Air Corps
Lt Gen Sugawara Michio
Direct units
12th Air Brigade
1st Sentai 1st Squadron (fighters)
11th Sentai (fighters)
3rd Air Brigade
15th Independent Air Unit
59th Sentai (fighters)
64th Sentai (fighters)
27th Sentai (minus part strength, assault planes)
75th Sentai (light bombers)
90th Sentai (light bombers)
Navy
Southern Area Force
Vice Adm Kondō Nobutake
Atago (flagship)
3rd Squadron (Hiei, Kirishima, Kongō, Haruna)
4th Destroyer Squadron
Mobile Carrier Fleet
Vice Adm Nagumo Chūichi
1st Air Flotilla (Akagi, Kaga)
2nd Air Flotilla (Sōryū, Hiryū)
4th Squadron (Takao)
8th Squadron (Tone, Chikuma)
1st Torpedo Squadron
Abukuma
17th Destroyer Squadron
27th Destroyer Squadron [minus part strength])
18th Destroyer Squadron (Akigumo)
Malaya Force
Vice Admiral Ozawa Jisaburō
Chōkai (flagship)
7th Squadron (Kumano, Suzuya, Mikuma)
4th Air Flotilla (Ryūjō, 2 special submarine tenders, etc)
3rd Torpedo Squadron
22nd Air Flotilla
11th Air Flotilla (joined later)
Netherlands East Indies Force
Vice Admiral Takahashi Ibō
Bali Invasion Force
Rear Adm Kubo Kyūji
Nagara
11th Destroyer Squadron
8th Destroyer Squadron
Eastern Java Invasion Force (4th Torpedo Squadron)
Vice Adm Nishimura Shōji
Naka
2nd Destroyer Squadron
9th Destroyer Squadron
24th Destroyer Squadron (minus part strength)
2nd Base Force
Itsukushima, Chitose (submarine tender), etc.
Western Java Invasion Force (5th Torpedo Squadron)
Rear Adm Hara Kensaburō
Natori
5th Destroyer Squadron
22nd Destroyer Squadron
6th Destroyer Squadron (minus part strength)
Other units
Submarine Units
A Submarine Unit
4th, 6th Submarine Squadrons
B Submarine Unit
C Submarine Unit
11th Air Fleet
Vice Adm Tsukahara Nishizō
21st Air Flotilla (1st Air Attack Force)
23rd Air Flotilla (2nd Air Attack Force)
22nd Air Flotilla (3rd Air Attack Force, formed from part of Malaya Force)
2nd Air Flotilla (Hiryū, 7th Destroyer Squadron, other units)
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Campaign casualties | Sumatra campaign: ?
Java campaign: 950 killed and wounded |
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Campaigns
Malaya Philippines Hong Kong, Pacific Borneo Celebes, Ambon, Timor New Britain Sumatra, Java
Reference links
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