Servicemen of the 67th Mechanised Brigade of the Armed Forces of Ukraine appear at a position in a frontline near Kreminna, amid Russia's attack on Ukraine, in Luhansk region, Ukraine November 2, 2023. REUTERS/Alina Smutko

Commander of an artillery unit of the Armed Forces of Ukraine Oleksandr, 45-years-old, watches a video on his phone with results of firing of a Giatsint-B howitzer towards Russian troops, inside a dugout side of a position near a frontline, amid Russia's attack on Ukraine, at an undisclosed location in Donetsk region, Ukraine, November 4, 2023. REUTERS/Alina Smutko

A view shows a former Russian position outside the village of Robotyne, amid Russia's attack on Ukraine, near a front line in Zaporizhzhia region, Ukraine November 4, 2023. REUTERS/Stringer

A Ukrainian serviceman inspects ammo at a former Russian position outside the village of Robotyne, amid Russia's attack on Ukraine, near a front line in Zaporizhzhia region, Ukraine November 4, 2023. REUTERS/Stringer

Servicemen of the 67th Mechanised Brigade of the Armed Forces of Ukraine, callsign Istoryk and callsign Hrek observe a video received from a reconnoitring drone inside a dugout side of a position in a frontline near Kreminna, amid Russia's attack on Ukraine, in Luhansk region, Ukraine November 2, 2023. REUTERS/Alina Smutko

Servicemen of the 67th Mechanised Brigade of the Armed Forces of Ukraine, callsign Istoryk, 26-year-old, unpacks a mortar ammunition at a position in a frontline near Kreminna, amid Russia's attack on Ukraine, in Luhansk region, Ukraine November 2, 2023. REUTERS/Alina Smutko

A serviceman of an artillery unit of the Armed Forces of Ukraine Mykhailo, 36, holds a Giatsint-B howitzer ammunition before firing towards Russian troops at a position near a frontline, amid Russia's attack on Ukraine, at an undisclosed location in Donetsk region, Ukraine, November 4, 2023. REUTERS/Alina Smutko