On September 5, National Guard serviceman Anton Bondarenko, callsign "Banderas" — Commander of the 1st Squad, 1st Rapid Response Platoon, acting Senior Sergeant of the 10th Company, 4th Battalion of the 13th Rapid Response Brigade "Khartiia", went missing in action while performing a combat mission in the Kharkiv direction, defending Ukraine’s independence, sovereignty, and territorial integrity.