Inside the war for Ukraine: Scenes from the frontlines

Two soldiers with the 58th Independent Motorized Infantry Brigade of the Ukrainian Army who wanted to be identified as "Ghost", 24, and "Soap", 30, release a drone for a test flight, near Bakhmut, Ukraine, November 25. REUTERS/Leah Millis

A wounded Ukrainian serviceman is moved in a pre-hospital medical aid center in Donetsk region, Ukraine, November 22.  Radio Free Europe/Radio Liberty/Serhii Nuzhnenko

Blood is seen on a stretcher near a pre-hospital medical aid center in Donetsk region, Ukraine, November 22.   Radio Free Europe/Radio Liberty/Serhii Nuzhnenko

Ukrainian servicemen fire with a Bureviy multiple launch rocket system at a position in Donetsk region, Ukraine, November 29.   Radio Free Europe/Radio Liberty/Serhii Nuzhnenko

A healthcare worker treats a wounded Ukrainian serviceman in a pre-hospital medical aid center in Donetsk region, Ukraine, November 22.  Radio Free Europe/Radio Liberty/Serhii Nuzhnenko

A Russian service member points his rifle at a combat position, on the left bank of the Dnipro river in the Zaporizhzhia region, Russian-controlled Ukraine, November 26. REUTERS/Alexander Ermochenko

Weapons, including a machine gun and Javelins, are stashed at a spotting position of the 68th Independent Jager Brigade of the Ukrainian Army in the trenches of a field position near the frontline in the Southern Donbas region in Ukraine, November...more

A member of the 68th Independent Jager Brigade of the Ukrainian Army enters a building set up as sleeping quarters near the frontline in the Southern Donbas region in Ukraine, November 29. REUTERS/Leah Millis

Ukrainian service members fire a shell from an M777 Howitzer at a front line in Donetsk Region, Ukraine, November 23. Radio Free Europe/Radio Liberty/Serhii Nuzhnenko

A tank containing members of the 68th Independent Jager Brigade of the Ukrainian Army, including the tank commander, rip through mud as they move towards a position to fire at a Russian military target on the frontline in the Southern Donbas region...more

Wool socks hang on a line in a building where service members with the Ukrainian Army temporarily stay near their positions in the field in the Northern Donbas region in Ukraine, November 30. REUTERS/Leah Millis

Russian service members are seen near a machine gun at a combat position, on the left bank of the Dnipro river in the Zaporizhzhia region, Russian-controlled Ukraine, November 26. REUTERS/Alexander Ermochenko

Petro, 35, a member of the 68th Independent Jager Brigade of the Ukrainian Army sits for a portrait in the sleeping quarters for him and other members of his brigade in a dug out field position near the frontline in the Southern Donbas region in...more

Healthcare workers treat a wounded Ukrainian serviceman in a pre-hospital medical aid center in Donetsk region, Ukraine, November 22.  Radio Free Europe/Radio Liberty/Serhii Nuzhnenko

A Russian service member stands at a combat position, on the left bank of the Dnipro river in the Zaporizhzhia region, Russian-controlled Ukraine, November 26. REUTERS/Alexander Ermochenko

Ukrainian servicemen prepare fire with a Bureviy multiple launch rocket system at a position in Donetsk region, Ukraine, November 29.   Radio Free Europe/Radio Liberty/Serhii Nuzhnenko

A member of the 68th Independent Jager Brigade of the Ukrainian Army scans the horizon for the Russian military from his position in the trenches near the frontline in the Southern Donbas region in Ukraine, November 29. REUTERS/Leah Millis

A soldier with the 58th Independent Motorized Infantry Brigade of the Ukrainian Army arms a drone with a modified grenade to test it, near Bakhmut, Ukraine, November 25. REUTERS/Leah Millis

"Soap", 30, a soldier with the 58th Independent Motorized Infantry Brigade of the Ukrainian Army, releases a modified grenade from a drone during a test flight, near Bakhmut, Ukraine, November 25. REUTERS/Leah Millis

Gregory, 45, a member of the 68th Independent Jager Brigade of the Ukrainian Army looks at a cat as it sleeps on his bed while he rests in a building set up as sleeping quarters near the frontline in the Southern Donbas region in Ukraine, November...more

A member of the 68th Independent Jager Brigade of the Ukrainian Army avoids a road bogged down by thick mud next to a field position near the frontline in the Southern Donbas region in Ukraine, November 29. REUTERS/Leah Millis

Healthcare workers treat a wounded Ukrainian serviceman in a pre-hospital medical aid centrer in Donetsk region, Ukraine, November 22.   Radio Free Europe/Radio Liberty/Serhii Nuzhnenko

Soldiers fish in a river in the Northern Donbas region in Ukraine, November 30. REUTERS/Leah Millis

Petro, 31, cleans his boots during downtime with fellow service members with the Ukrainian Army as they temporarily stay in a building near their positions in the field in the Northern Donbas region in Ukraine, November 30. REUTERS/Leah Millis

A tank containing members of the 68th Independent Jager Brigade of the Ukrainian Army, including the tank commander, rip through mud as they move towards a position to fire at a Russian military target on the frontline in the Southern Donbas region...more

A Russian service member sits near the automatic grenade launcher Plamya at a combat position, on the left bank of the Dnipro river in the Zaporizhzhia region, Russian-controlled Ukraine, November 26. REUTERS/Alexander Ermochenko

Petro, 35, a member of the 68th Independent Jager Brigade of the Ukrainian Army stands next to a flame in the sleeping quarters in a dug out field position near the frontline in the Southern Donbas region in Ukraine, November 29. REUTERS/Leah...more

Ukrainian service members fire a shell from an M777 Howitzer at a front line in Donetsk Region, Ukraine, November 23. Radio Free Europe/Radio Liberty/Serhii Nuzhnenko

Viktor, 56, a member of the 68th Independent Jager Brigade of the Ukrainian Army prepares hot water for coffee in the kitchen area in a dug out field position near the frontline in the Southern Donbas region in Ukraine, November 29. REUTERS/Leah...more