The Hotel Yamato incident was the tearing of the blue colour of the Dutch flag flying at Hotel Yamato (now Hotel Majapahit) on 19 September 1945, which was preceded by the failure of negotiations between negotiations between Soedirman (Surabaya resident) and W. V. C. Ploegman to lower the Dutch flag.

Chronology of events

Indonesian flag-raising movement 
After the Proclamation of Indonesian Independence and the issuance of the Sukarno government edict on 31 August 1945 which stipulated that from 1 September 1945 the national flag, Sang Merah Putih, would be flown throughout Indonesia, the flag-raising movement expanded to all corners of Surabaya.

In various strategic places and other places the Indonesian flag was raised. Among others, on the upper terrace of the Karesidenan Office Building (Syucokan office, the current Governor's building, Pahlawan Street) located in front of the Kempeitai building (now Heroes Monument), on top of the Internatio Building, followed by a line of youth from all over Surabaya carrying the Indonesian flag coming to Tambaksari (Gelora 10 November Stadium) to attend a giant meeting organised by Barisan Pemuda Surabaya.

During the meeting, the Tambaksari field was full of waving red and white flags accompanied by chants of 'Merdeka' shouted by the masses. The Kempeitai, who had banned the meeting, was unable to stop and disperse the mass of Surabaya people. The climax of the flag-raising movement in Surabaya then occurred in the flag-tearing incident at Yamato Hotel (now named Majapahit Hotel) on Tunjungan Street, no. 65, Surabaya.

The arrival of Allied troops 

Initially the Japanese and Indo-Dutch who had come out of internment set up an organisation, the Social Contact Committee, which received full support from the Japanese. The formation of this committee was sponsored by the International Red Cross. However, under the cover of the Red Cross, they engaged in political activities. They tried to take over warehouses and some places they had occupied, such as the Yamato Hotel. On 18 September 1945, Allied and Dutch officers from AFNEI (Allied Forces Netherlands East Indies) arrived in Surabaya together with a Red Cross delegation from Jakarta.

The Allied group was housed by the Japanese administration in Surabaya at the Yamato Hotel, Jl Tunjungan 65, while the Intercross group at the Setan Building, Jl Tunjungan 80 Surabaya, without the permission of the Surabaya Karesidenan Government. And since then Yamato Hotel was used as the headquarters of the Recovery of Allied Prisoners of War and Internees (RAPWI) operation.

Raising the Dutch flag 
A group of Dutch people under the leadership of W. V. C. Ploegman on the evening of 19 September 1945, at 21.00, raised the Dutch flag, without the consent of the Surabaya Regional Indonesian Government, on the top level of the Yamato Hotel, on the north side. The next day, many of the Surabayan Pemuda (Youth) saw it and became angry because they considered that the Dutch had insulted Indonesian sovereignty, wanted to restore power back in Indonesia, and harassed the Red and White flag-raising movement that was taking place in Surabaya.

The failure of Sudirman and Ploegman's negotiation 
After the gathering of the masses, Soedirman, who was the Surabaya Regional Resident of the Indonesian Government who at that time served as Deputy Resident (Fuku Syuco Gunseikan) who was still recognised by the Dai Nippon Surabaya Syu government, came through the crowd and entered the Yamato hotel escorted by Sidik and Hariyono. As a representative of RI, he conferred with Ploegman and his friends and requested that the Dutch flag be immediately lowered from the Yamato Hotel building. Ploegman refused to lower the Dutch flag and refused to recognise Indonesian sovereignty. The negotiations became heated, Ploegman pulled out a pistol, and a fight broke out in the negotiation room. Ploegman was strangled to death by Sidik, who was later killed by a Dutch soldier on guard who heard Ploegman's gun, while Sudirman and Hariyono fled outside Hotel Yamato.

Tearing of the Dutch Flag 

Outside the hotel, the youths who knew about the breakdown of the negotiations immediately broke into the Yamato Hotel and a fight broke out in the hotel lobby. Some of the youths scrambled up to the top of the hotel to take down the Dutch flag. Hariyono, who had been with Sudirman, returned to the hotel and became involved in climbing the flagpole and together with Kusno Wibowo managed to lower the Dutch flag, tear off the blue part, and hoist it to the top of the pole again. This was greeted by the crowd below the hotel with repeated chants of 'Merdeka'.

The role of events in the Indonesian War of Independence 

After the incident at the Yamato Hotel, on 27 October 1945, the first battle between Indonesia and the AFNEI troops erupted. The small attacks turned into a generalised attack that claimed many casualties both in the Indonesian and British military as well as civilians on the Indonesian side. Eventually General D.C. Hawthorn (the commander of the 23rd British Indian Division)  asked President Sukarno for help to defuse the situation and call a ceasefire. The ceasefire failed and coupled with the death of Brigadier General Mallaby, resulted in the issuance of the 10 November ultimatum by the British and eventually the largest and heaviest Battle of Surabaya in the history of the Indonesian War of Independence. To commemorate it, the date of the event was designated as Heroes' Day.

See also 

 10 November Incident
 Flag of Indonesia
 Flag of the Netherlands

References 

1945 in Indonesia
Indonesian National Revolution
History of Surabaya
September 1945 events in Asia