===
Russian invasion of Ukraine===
Kharkiv counteroffensive The 3rd Battalion, attached to Ukraine's
92nd Mechanized Infantry Brigade, participated in the
Kharkiv counteroffensive in September and October 2022, pushing Russian forces back to and passed the boundary of Luhansk Oblast. In mid-October, teams from the battalion reached Stel'makhivka town and the outskirts of Novoselivske, where they encountered fierce resistance.
Kupyansk front In November 2022, one of the battalion's teams captured and safely brought back a Russian officer while on a reconnaissance mission in the Kupyansk sector.
Battle for Novoselivske In January 2023, the 3rd Battalion took part in the brigade-level counteroffensive to retake the town of
Novoselivske, Luhansk Oblast, which had fallen back to the Russians after having been freed earlier. Two teams from the Battalion, Team Commando and Team Omega, played an integral role in the success of this operation, tasked by 92nd Brigade command to push through the Russian forces defending the village and seize two key Russian positions further East: the north-east and south-east corners of the town. In a second phase, Commando and Omega were to hold these positions against Russian reinforcements, in order to allow Ukrainian infantry to clear the village behind them. The participating two teams from 3rd Battalion jointly operated with small detachments of 92nd Brigade’s
rozvidka (reconnaissance). Although suffering significant casualties from mortars, AGS, cluster munitions and tank fire during the assault phase, and later taking proximity fire from multiple T-90 tanks and bomber drones during the holding phase, the two joint teams successfully captured the assigned positions and held them for upwards of 24h through the night and next day, eventually relieved by Ukrainian troops on January 14th. As part of this offensive, the 3rd Battalion brought back 6 Russian prisoners alive, which were later featured in online articles. They can be seen receiving medical treatment by medics from the 92nd Brigade. Two legionnaires from 3rd Battalion are standing behind the Russian prisoners, top left corner. The letters "medic" are visible on the uniform of the man in the center. Novoselivske, although returned to Ukrainian control, had been completely destroyed in the weeks prior, and empty for days with the last resident reportedly shot by a Russian sniper the first week of January.
Battle of Bakhmut In March and April 2023, during the
Battle of Bakhmut, Ukrainian forces were rapidly losing ground in the direction of the city of
Bakhmut. 3rd Battalion International Legion, alongside several teams from
1st Battalion (including the Kenobi Death Korps, a part of Bravo I Company 1st Battalion) participated in the defense of Bakhmut. The International Legion has described the battle on their website as "one of the most gruelling battles since the beginning of the war". One of the legionnaires described that throughout the battle, fighting was non-stop, with continuous shelling,
machine gun fire, and
rockets often ongoing for all 24 hours in a day. Amidst the heavy fighting, the legionnaires contributed to repelling Russian attacks on the
flanks of Bakhmut and securing the remaining supply routes into the besieged city. In July 2023, it was reported by the International Legion that a team from the battalion had captured a Russian soldier while assaulting Russian positions in
eastern Ukraine.
2023 Ukrainian counteroffensive On 29 August 2023,
Malcolm Nance, a member of the battalion, stated publicly that the battalion was deployed to the
Donbas front during the Ukrainian summer counteroffensive and required vehicles including
Steyr-Puch Pinzgauer Armored Personnel Carriers, armored
Land Rover Defender trucks, and Polaris ATVs. ==Notable members==