Ukraine's military chiefs are facing growing criticism over a recent Russian missile strike that is believed to have caused heavy Ukrainian casualties.

"Every soldier in the combat zone - in the enemy's line of fire and aerial reconnaissance - knows how to behave in the open, how to ensure safety."

Drone footage has now emerged on a Russian Telegram channel purportedly showing the moment of the deadly strike on what looked like a open-air ceremony.

Ruslan Kahanets, commander of Ukraine's volunteer battalion Sonechko (Sun), said in a Facebook post on Saturday that there was "a pile of dead officers and soldiers" after the Russian strike.

A video has also emerged of a Ukrainian soldier, believed to be from a brigade located nearby, who publicly criticises officers for organising the reported award ceremony.

A number of social media users in Ukraine have been voicing their anger, demanding punishment for the organisers of the award ceremony.

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