A Ukrainian serviceman is seen atop of a tank at a position near a frontline, amid Russia's attack on Ukraine, in Donetsk region, Ukraine September 16, 2022. REUTERS/Stringer

Ukrainian service members wait in a trench at a position in a frontline, amid Russia’s attack on Ukraine, in Zaporizhzhia region, Ukraine September 21, 2022. REUTERS/Dmytro Smolienko

A Ukrainian service member patrols an area in a frontline, amid Russia’s attack on Ukraine, in Zaporizhzhia region, Ukraine September 21, 2022. REUTERS/Dmytro Smolienko

A Ukrainian service member patrols an area in a frontline, amid Russia’s attack on Ukraine, in Zaporizhzhia region, Ukraine September 21, 2022. REUTERS/Dmytro Smolienko

A Ukrainian service members wait in a trench at a position in a frontline, amid Russia’s attack on Ukraine, in Zaporizhzhia region, Ukraine September 21, 2022. REUTERS/Dmytro Smolienko

A Ukrainian serviceman sits inside a tank at a position near a frontline, amid Russia's attack on Ukraine, in Donetsk region, Ukraine September 16, 2022. REUTERS/Stringer

A Ukrainian service member smokes in a trench at a position in a frontline, amid Russia’s attack on Ukraine, in Zaporizhzhia region, Ukraine September 21, 2022. REUTERS/Dmytro Smolienko

Ukrainian servicemen rest at a position near a frontline, as Russia's attack on Ukraine continues, in Mykolaiv region, Ukraine, September 16, 2022. REUTERS/Umit Bektas

A Ukrainian service member checks a machine gun at a position in a frontline, amid Russia’s attack on Ukraine, in Zaporizhzhia region, Ukraine September 21, 2022. REUTERS/Dmytro Smolienko

Ukrainian servicemen play cards as they rest at a position near a frontline, as Russia’s attack on Ukraine continues, in Mykolaiv region, Ukraine, September 16, 2022. REUTERS/Umit Bektas

Ukrainian servicewoman Tetyana Dovgopola is helped by her serviceman husband Andrij Dovgopolyi as she jumps out their squad's BM21 Grad multiple rocket launcher at a position near a frontline in Mykolaiv region, Ukraine, September 16, 2022. REUTERS/Umit Bektas

A Ukrainian service member waits in a trench at a position on a frontline, amid Russia’s attack on Ukraine, in the Zaporizhzhia region, Ukraine September 21, 2022. REUTERS/Dmytro Smolienko TPX IMAGES OF THE DAY

A Ukrainian service member pets dogs at a position near a frontline, amid Russia’s attack on Ukraine, in Zaporizhzhia region, Ukraine September 21, 2022. REUTERS/Dmytro Smolienko

A Ukrainian service member looks out of a trench at a position in a frontline, amid Russia’s attack on Ukraine, in Zaporizhzhia region, Ukraine September 21, 2022. REUTERS/Dmytro Smolienko

A Ukrainian service member places cartridges to a machine gun at a position in a frontline, amid Russia’s attack on Ukraine, in Zaporizhzhia region, Ukraine September 21, 2022. REUTERS/Dmytro Smolienko