Ukraine conducts secret seven-week operation in Sumy region

The Ukrainian military intelligence service, known as HUR, has revealed details of a seven-week special operation in the Sumy region codenamed “Cheburechna.” Conducted by Group 10 of the Department of Active Operations, the mission aimed to disrupt a planned Russian offensive.

Ukrainian troops operated through dense forests, steep slopes, and ravines to establish logistics routes, set ambushes, and capture Russian soldiers. The operation resulted in the seizure of 642 hectares of contested forest land. According to intelligence reports, the mission was so covert that Russian commanders reportedly believed they still maintained control over the lost positions for two weeks after the territory had been taken.

The unit used the codename “Cheburechna” based on a radio protocol where captured enemy soldiers were referred to as “chebureks.” Following the specialized mission, the secured perimeter was handed over to conventional Ukrainian defense units to establish permanent fortifications.