"Our comrade, Junior Sergeant Serhiy Oleksandrovych Moiseenko deceased in the Joint Forces operation area, during the enemy attack with the use of small arms and sniper rifles", reads the message.
The brigade expressed his condolences to the family and friends of the fighter.
On February 28, Russian militants landed seven attacks on Ukrainian positions in Donbas. Moiseenko was the Ukrainian serviceman who deceased that day.
Earlier, Ukrainian intelligence reported that 450 snipers are fighting in the ranks of illegal armed formations of Russian militants. Part of these marksmen are citizens of the Russian Federation.