A new recruit of the 1st Da Vinci Wolves Separate Mechanized Battalion, named after Dmytro Kotsiubailo, attends a military exercise, amid Russia's attack on Ukraine, in an undisclosed location in Central Ukraine March 12, 2024. REUTERS/Viacheslav Ratynskyi

A volunteer who aspires to join the 3rd Separate Assault Brigade of the Ukrainian Armed Forces takes part in a basic training, amid Russia's attack on Ukraine, in Kyiv region, Ukraine March 5, 2024. REUTERS/Viacheslav Ratynskyi TPX IMAGES OF THE DAY

Ukrainian servicemen of 79th brigade take part in training, amid Russia's attack on Ukraine, in Donetsk region, Ukraine March 4, 2024. REUTERS/Oleksandr Ratushniak TPX IMAGES OF THE DAY

New recruits of the 1st Da Vinci Wolves Separate Mechanized Battalion, named after Dmytro Kotsiubailo, attend a military exercise, amid Russia's attack on Ukraine, in an undisclosed location, in Central Ukraine March 12, 2024. REUTERS/Viacheslav Ratynskyi

A new recruit of the 1st Da Vinci Wolves Separate Mechanized Battalion, named after Dmytro Kotsiubailo, attends a military exercise, amid Russia's attack on Ukraine, in an undisclosed location, in Central Ukraine March 12, 2024. REUTERS/Viacheslav Ratynskyi

A new recruit of the 1st Da Vinci Wolves Separate Mechanized Battalion, named after Dmytro Kotsiubailo, attends a military excercise, amid Russia's attack on Ukraine, in an undisclosed location, in Central Ukraine March 12, 2024. REUTERS/Viacheslav Ratynskyi

New recruits of the 1st Da Vinci Wolves Separate Mechanized Battalion, named after Dmytro Kotsiubailo, attend an FPV drone training, amid Russia's attack on Ukraine, in an undisclosed location, in Central Ukraine March 12, 2024. REUTERS/Viacheslav Ratynskyi

A new recruit of the 1st Da Vinci Wolves Separate Mechanized Battalion, named after Dmytro Kotsiubailo, attends an FPV drone training, amid Russia's attack on Ukraine, in an undisclosed location, in Central Ukraine March 12, 2024. REUTERS/Viacheslav Ratynskyi

New recruits of the 1st Da Vinci Wolves Separate Mechanized Battalion, named after Dmytro Kotsiubailo, attend a military exercise, amid Russia's attack on Ukraine, in an undisclosed location, in Central Ukraine March 12, 2024. REUTERS/Viacheslav Ratynskyi

Volunteers who aspire to join the 3rd Separate Assault Brigade of the Ukrainian Armed Forces take part in a basic training, amid Russia's attack on Ukraine, in Kyiv region, Ukraine March 5, 2024. REUTERS/Viacheslav Ratynskyi

New recruits of the 1st Da Vinci Wolves Separate Mechanized Battalion, named after Dmytro Kotsiubailo, rest during a military exercise, amid Russia's attack on Ukraine, in an undisclosed location, in Central Ukraine March 12, 2024. REUTERS/Viacheslav Ratynskyi

New recruits of the 1st Da Vinci Wolves Separate Mechanized Battalion, named after Dmytro Kotsiubailo, attend a military exercise, amid Russia's attack on Ukraine, in an undisclosed location, in Central Ukraine March 12, 2024. REUTERS/Viacheslav Ratynskyi

Ukrainian servicemen of 79th brigade rest as they take part in a training, amid Russia's attack on Ukraine, in Donetsk region, Ukraine March 4, 2024. REUTERS/Oleksandr Ratushniak

New recruits of the 1st Da Vinci Wolves Separate Mechanized Battalion, named after Dmytro Kotsiubailo, attend a military excercise, amid Russia's attack on Ukraine, in an undisclosed location, in Central Ukraine March 12, 2024. REUTERS/Viacheslav Ratynskyi

A volunteer who aspires to join the 3rd Separate Assault Brigade of the Ukrainian Armed Forces takes part in a basic training, amid Russia's attack on Ukraine, in Kyiv region, Ukraine March 5, 2024. REUTERS/Viacheslav Ratynskyi

A new recruit of the 1st Da Vinci Wolves Separate Mechanized Battalion, named after Dmytro Kotsiubailo, rests during a military exercise, amid Russia's attack on Ukraine, in an undisclosed location, in Central Ukraine March 12, 2024. REUTERS/Viacheslav Ratynskyi