They helped the DI/TII movement by supplying weapons when they were stationed in Demak and involved in the operation to eradicate the disruptive troops at the Merapi Merbabu Complex.

[2] Hurt by being merged into the Pragolo Brigade and receiving discriminatory treatment because of the Hezbollah origins, 426 Battalion decided to rebel with the support of DI/TII.

[3] Hearing of 426 Battalion's support for the Darul Islam movement, Major Munawar and Captain Sofyan received orders to go to the Diponegoro Division headquarters for inspection on December 7, 1951.

[4] The rebellion erupted on December 8, 1951, marked by fighting between former 426 Battalion troops and the Indonesian soldiers in Kudus in response to Captain Sofyan's refusal to surrender.

[7] Meanwhile, two companies of 426 Battalion led by Captain Alif who were undergoing training in Magelang escaped from the Dodik dormitory to the south in the early hours of December 10 by disguising as ordinary residents.

[9] Troops from the former 426 Battalion led by Captain Alif arrived in Klaten on December 15, 1951, after passing through various areas.

An armed confrontation between former 426 Battalion troops and the TNI also occurred in Ngupit and killed Major Kusmanto.

[12] In mid-December 1951, former 426 Battalion troops operated in the Semarang, Purwodadi-Grobogan, Salatiga, Kedu Residency, Yogyakarta-Purworejo and Surakarta areas.

While stopping in Wonogiri, Sofyan succeeded in recruiting local youth by naming his troops the Tax Liberation Army.

[14] To quell the rebellion of ex-426 Battalion troops, the Diponegoro Division launched Operation Sapta Marga Merdeka Timur V led by Mochammad Bachrun on 19 December 1951.

The burning of residents' houses by former 426 Battalion's troops occurred in February in five villages in Nogosari [id] and Temon.

In Bendungan [id], Wonosobo Captain Alif and 100 of his troops were captured by the TNI after fleeing when told to show them where their weapons were hidden.