Strategi Supit Urang, Kreativitas Jenderal Sudirman Mengusir Belanda dan Sekutu Dari Ambarawa

Battle of Ambarawa (Central Java) — Indonesian National Revolution

The video recounts the Battle of Ambarawa during the Indonesian National Revolution, framing it as a case of Indonesian ingenuity and coordinated strategy, especially credited to General Sudirman.

Initial trigger and Allied tensions (October 1945)

After British/Allied forces landed (including artillery units) to disarm Japanese troops, an arrangement was reportedly made to allow the evacuation of allied internees. However, tensions escalated when Dutch-linked Allied authorities reportedly armed Dutch prisoners, leading to fighting in Magelang.

Breakdown of negotiations (November 1945)

• Indonesian forces (TKR) under Major Sumarto clashed with British troops in Ambarawa on November 20, 1945.
• Negotiations discussed around November 2, 1945 aimed to manage evacuation and troop presence, but the British allegedly increased their forces in Magelang instead of honoring prior agreements.

British pressure increases (Nov 21–22, 1945)

• British reinforcements were sent to Ambarawa, supported by warplanes.
• This was followed by bombing of villages around Ambarawa, increasing pressure on Indonesian positions.

Indonesian defensive organization

Indonesian troops formed defensive lines along the railway, separating Ambarawa from the Magelang direction. The video emphasizes coordinated participation from multiple local forces and battalions, including units from:

• Boyolali
• Salatiga
• Kartasura
• Yogyakarta

These coordinated efforts are presented as enabling tactical successes, such as defeating British forces in Pingit Village.

Sustained fighting and shifting command (late November 1945)

British troops were described as being surrounded, but they attempted to escape, including using artillery. Reinforcements helped contain British movement in Jambu Village.

The video highlights the role of Col. Holland Iskandar in:

• coordinating TKR units, and
• establishing battle leadership headquarters in Magelang on November 26, 1945.

A key turning point occurs when Lieutenant Colonel East Deman is lost and Colonel Sudirman takes over command—after which the momentum shifts more strongly toward TKR.

TKR offensives and tactical innovation (early December 1945)

• December 5, 1945: TKR expels the British from Banyubiru Village.
• December 11, 1945: Sudirman analyzes the enemy’s position as trapped and orders a simultaneous final attack.

Sudirman also develops the “Supit Urang” tactic, described as:

• a coordinated breakthrough and double siege
• tightening pressure from the right and left (“shrimp clamping”)

• coordinated across sectors using sector commanders and prepared reserve forces

• December 12, 1945 (starting 4:30): Within about 1.5 hours, TKR reportedly encircles British forces in Ambarawa and maintains pressure for 4 days and 4 nights.

British withdrawal (mid-December 1945)

Facing intensified pressure, British troops eventually leave Ambarawa on December 15, 1945 and retreat toward Semarang.

List of presenters or contributors

Not specified in the provided subtitles.