It began on 7 November 2023, with junta border posts in Mese Township, Kayah State (including Pantein)[1] being seized by Karenni forces.

[7] 70 junta soldiers were said to have been killed in the attack, while Karenni forces claimed to have incurred four dead.

[8][9] The KNDF claimed responsibility for the junta K-8W trainer/attack aircraft which crashed in a combat zone near Loikaw, the capital of Kayah State.

Pyu township is also important due to its close proximity to the capital city Naypyitaw.

Involved in this push are the local PDF units as well as KNU, Bamar People’s Liberation Army and KNLA.

Al Jazeera reported that this fighting in Moso was linked to a supply road used by the resistance, with Tatmadaw trying to disrupt its use.

[21][9] However, most of the media outlets have now started to utilize the term Operation 1111 universally for all Kayah related fighting.