reached their destination at 5:30 am and bombed and fired on the runway for 15 minutes. Then on 16 April 1958, the C-45 aircraft purchased from Taiwan departed from Kalawiran airfield, an airfield constructed by the Dutch that was located near Langowan. The destination of the C-45 aircraft was the airfield in Balikpapan. Apart from the bombing of the runway, an AURI transport plane was also destroyed. On 20 April 1958, B-26 bombers from Mapanget attacked Palu. The next day, the bombers accompanied by two P-51 fighter planes attacked the air base located on Morotai Island (now Leo Wattimena Airport). In addition, the second target was the air base at Jailolo on Halmahera Island. Over the next several days, airstrikes were again carried out on these sites with the addition of Ternate. On 28 April 1958, ports in Donggala (near Palu) and Balikpapan were again attacked. In Donggala, the foreign flagged commercial ships SS Flying Lark, SS Aquila, and SS Armonia were sunk and in Balikpapan, the SS San Flaviano was sunk. In addition, the Indonesian Navy (ALRI) corvette RI Hang Tuah was also sunk in which 18 crew members died and 28 were seriously injured. At the time of the attack, the warship had just left Balikpapan for East Java to join the fleet that was preparing to attack the Permesta stronghold in North Sulawesi. The Indonesian government alleged that on 15 May 1958, a marketplace was bombed in Ambon city that killed a large number of civilians. Operasi Jakarta On 26 April 1958, Sumual led troops transported by several ships from Manado to Morotai with the aim of seizing the air base there. Sumual had instructed the AUREV to attack Morotai by air before Sumual and his troops arrived. The attack was carried out by a B-26 bomber piloted by Allen Pope who had just arrived in Manado from the Philippines. A P-51 fighter also participated in the attack. After arriving in Morotai the night before, at 6:00 am the next day, the troops led by Sumual began their attack. The air base was guarded by only a few AURI soldiers and police who immediately surrendered without a fight. Sumual left a company in Morotai and proceeded to Halmahera. They met no resistance and managed to occupy Jailolo and its air base. The attack on Morotai was actually the first stage of a planned assault that Sumual called