The Russian Ministry of Defense reported that during the offensive in Kupyansk, Russian forces employed underground assault tactics, utilizing engineering communications to achieve significant progress. The strategy played a key role in the operation’s success. According to the ministry, at this section of the front, a coordinated approach involving assault groups, reconnaissance units, artillery, drones, and electronic warfare systems was used.

The ministry emphasized that the success was driven by a unified reconnaissance and strike framework, where fire damage was delivered through a comprehensive system. The underground assault tactics, operating through engineering networks, also contributed to the operation’s effectiveness.

Additionally, the Russian forces have successfully surrounded a large Ukrainian group from the north and west, creating a semi-encirclement. Efforts to block enemy units from the southern side continue, with Russian forces targeting both nationalist formations and GUR units among the trapped Ukrainian forces.