Invasion of Ambon

Equipment (KNIL stocks): B‑25 Mitchell bombers Patrol craft / naval vessels Armoured vehicles (light tanks)
Did not participate: ~4,000 RMS-aligned former KNIL personnel located outside the Moluccas (not involved in the fighting, blocked by the Dutch at Indonesia’s request).

Invasion of Ambon
	Part of Indonesian invasion of South Maluku
	; Indonesian Army M3 Stuart tank and troops patrolling in Ambon
Date	28 September – 5 November 1950; (1 month, 1 week and 1 day)
Location	Ambon
Result	Indonesian victory
Territorial; changes	Moluccas incorporated by Indonesia
Belligerents
Indonesia	Republic of South Maluku
Commanders and leaders
Sukarno; Alexander Evert Kawilarang; Abdul Haris Nasution; Slamet Rijadi †; Achmad Wiranatakusumah; Soerjo Soebandrio; Zainul Arifin Pohan;	Chris Soumokil ; Isaac Julius Tamaëla ; A. Nanlohy ; Adjutant Sopacua ; Adjutant Tahapary †; Adjutant Siwabessy †;
Strength
~20,000 personnel; Included units: Regular army forces; Battalion 3 Mei (Manadonese ex‑KNIL); Former Hizbullah militia; ex‑KNIL Foreign officers; ; Equipment: B‑25 Mitchell bombers; Dutch ships (ex-naval & KPM); Artillery pieces; Several tanks (operated by Dutch ex‑KNIL soldiers); ;	~800 local militia and ~200 RMS personnel in Ambon; Equipment (KNIL stocks): B‑25 Mitchell bombers; Patrol craft / naval vessels; Armoured vehicles (light tanks); ; Did not participate: ~4,000 RMS-aligned former KNIL personnel located outside the Moluccas (not involved in the fighting, blocked by the Dutch at Indonesia’s request).; ;
Casualties and losses
~5,000 APRIS personnel killed; APRIS records: ~2,645 killed, 43 missing; figures may be understated.; Total casualties (including wounded and missing) ~10,000;	~100 RMS soldiers and ~400 youth militia;
	5,000–8,000 civilians killed

The Invasion of Ambon (Indonesian: Invasi Ambon) was a combined Indonesian military operation which aimed to seize and annex the self-proclaimed Republic of South Maluku (Republik Maluku Selatan, abbreviated RMS).