Russia’s Battlegroup North said its TOS-1A heavy flamethrower crews carried out multiple strikes in Ukraine’s Sumy region.
According to Russian state media agency TASS, the attacks destroyed five Ukrainian strongpoints and four UAV control posts in one day. Russian officials also claimed that more than 25 Ukrainian soldiers were killed during the operation.
A platoon commander with the call sign Rim described how the operation was carried out overnight.
He said Russian drone operators first identified Ukrainian targets across the area before passing coordinates to the flamethrower crews. The TOS-1A systems then moved into firing positions at night and launched thermobaric rockets at the selected locations.
Russian officials stated that the targeted sites were fully destroyed after the strikes. Independent verification of battlefield claims from either side remains difficult due to the ongoing conflict. Ukraine has not publicly confirmed the reported losses mentioned by Russian sources.
What Makes TOS-1A Solntsepek Dangerous
The TOS-1A Solntsepek is one of Russia’s most powerful short-range rocket systems. It is mounted on the chassis of the Soviet-designed T-72 battle tank, providing armor protection and mobility across rough terrain. Instead of a tank turret, the vehicle carries a 24-barrel rocket launcher.
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The system fires 220 mm thermobaric rockets designed to create intense heat and massive pressure waves. These weapons work by spreading a fuel cloud before igniting it, producing a powerful blast inside bunkers, trenches, and buildings.
Military experts often compare thermobaric effects to a combination of explosive force and extreme heat concentrated over a wide area.
Russian officials said the TOS-1A is mainly used against fortified positions, dugouts, and lightly armored vehicles. A full salvo of 24 rockets can be fired in about six seconds and can strike an area covering roughly 40,000 square meters.
Standard rockets have a range of around 6 kilometers, while newer extended-range versions can reportedly reach up to 10 kilometers.
Battlefield Role and Strategic Impact
The TOS-1A operates close to frontline combat zones because of its relatively short firing range. This exposes the system to artillery, drones, and anti-tank attacks from opposing forces. To support rapid reloading, Russia uses a separate TZM-T transporter-loader vehicle built on the same T-72 chassis.
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Russia has used the TOS-1A in several military campaigns over the years, including operations in Syria and Ukraine. The weapon has drawn international attention because thermobaric munitions can cause severe destruction in urban and fortified environments. Human rights groups and military analysts continue to debate the humanitarian impact of such weapons in populated areas.
The latest claims from Sumy show how both Russia and Ukraine are increasingly relying on drones and heavy firepower to shape frontline battles. Drone surveillance now plays a major role in identifying targets before artillery or rocket strikes begin.
