Ukrainian servicemen of the 30th Prince Kostiantyn Ostrozkyi Separate Mechanized Brigade fire a BM-21 Grad multiple rocket launch system towards Russian troops, in Donetsk region, Ukraine on June 3, 2025. (Photo by Vyacheslav Madiyevskyy/Reuters)





A serviceman from the mobile air defence unit of the 115th Separate Mechanized Brigade of the Ukrainian Armed Forces observes the sky during an overnight shift, amid Russia's attack on Ukraine, in Kharkiv Region, Ukraine on June 1, 2025. (Photo by Sofiia Gatilova/Reuters)





In this photo provided by Ukraine's 65th Mechanized Brigade press service, Ukrainian servicemen attend a military training in Zaporizhzhia region, Ukraine, Monday, May 26, 2025. (Photo by Andriy Andriyenko/Ukraine's 65th Mechanized Brigade via AP Photo)





A serviceman of the 68th Separate Chasseurs Brigade of the Ukrainian Armed Forces poses for a picture after he came back from a combat mission, amid Russia's attack on Ukraine, near the town of Pokrovsk in Donetsk region, Ukraine on May 26, 2025. (Photo by Ivan Anatolii Stepanov/Reuters)





A foreign volunteer of the 13th Operative Purpose Brigade “Khartiia” of the National Guard of Ukraine looks on during a military exercise at a training ground near a front line, amid Russia's attack on Ukraine, in Kharkiv region, Ukraine on June 25, 2025. (Photo by Viacheslav Ratynskyi/Reuters)





A Ukrainian serviceman prepares to fire a 120-mm mortar towards Russian troops at a frontline, amid Russia's attack on Ukraine, near the town of Chasiv Yar in Donetsk region, Ukraine on May 29, 2025. (Photo by Ukrainian Armed Forces/Reuters)





Foreign volunteers of the 13th Operative Purpose Brigade “Khartiia” of the National Guard of Ukraine attend military exercises at a training ground near a front line, amid Russia's attack on Ukraine, in Kharkiv region, Ukraine on June 25, 2025. (Photo by Viacheslav Ratynskyi/Reuters)





A service member of a drone unit of the 24th Separate Mechanized Brigade named after King Danylo of the Ukrainian Armed Forces prepares a heavy combat drone before its flight over positions of Russian troops, amid Russia's attack on Ukraine, in Donetsk Region, Ukraine on June 11, 2025. (Photo by Serhii Korovainyi/Reuters)





A service member of the 110th Separate Brigade of the Territorial Defence Forces of the Ukrainian Armed Forces fires a howitzer towards Russian troops, amid Russia's attack on Ukraine, at a front line in Zaporizhzhia region, Ukraine on June 16, 2025. (Photo by Reuters/Stringer)





Servicemen of the 28th Separate Mechanized Brigade of the Ukrainian Armed Forces prepare to fire a M109 Paladin self-propelled howitzer towards Russian troops, near the frontline city of Toretsk in Donetsk region, Ukraine on June 2, 2025. (Photo by Anatolii Stepanov/Reuters)





A serviceman from the mobile air defence unit of the 115th Separate Mechanized Brigade of the Ukrainian Armed Forces fires a Browning machine gun towards a Russian drone during an overnight shift, amid Russia's attack on Ukraine, in Kharkiv Region, Ukraine on June 2, 2025. (Photo by Sofiia Gatilova/Reuters)





Policemen of the 'Khyzhak' Brigade prepare a Vampire combat drone for a delivery of ammunition and food for their brothers-in-arms to a position near a frontline town of Toretsk in Donetsk region Ukraine on May 30, 2025. (Photo by Anatolii Stepanov/Reuters)





A serviceman of the 28th Separate Mechanized Brigade of the Ukrainian Armed Forces checks an area for drones as he rides in a car, amid Russia's attack on Ukraine, near the frontline city of Toretsk in Donetsk region, Ukraine on June 2, 2025. (Photo by Anatolii Stepanov/Reuters)





A handout photo made available by the press service of the 24th Mechanized Brigade of Ukrainian Armed Forces, shows a serviceman from the 2nd Rifle Battalion of the 24th Mechanised Brigade named after King Danylo, fires a 120 mm mortar at the outskirts of Chasiv Yar in the Donetsk region , Ukraine, 27 May 2025, amid the ongoing Russian invasion. (Photo by Ukrainian 24th Mechanised Brigade/EPA/EFE)





A Ukrainian serviceman fires a howitzer in Kharkiv region, Ukraine, on May 27, 2025. (Photo by Anatolii Stepanov/Reuters)