KYIV, Ukraine >> In a small coal-mining town on Ukraine’s eastern front line, a fight for strategic superiority is being waged in a battlefield steeped with symbolism as the one-year anniversary of Russia’s invasion nears.

The town of Vuhledar — meaning “gift of coal” — has emerged as a critical hot spot in the fight for Donetsk province that would give both sides, the Ukrainian forces who hold the urban center, and the Russians positioned in the suburbs, a tactical upper hand in the greater battle for the Donbas region.

Located on an elevated plane that is one of the few high-terrain spots in the area, its capture would be an important step for Russia to disrupt Ukrainian supply lines. Securing Vuhledar would give Ukraine a potential launching pad for future counter-offensives south.

Then there is the symbolic weight: Vuhledar is close to the administrative border of Donetsk province, and winning it would play into Russia’s greater aim of controlling the region as a whole.

“The center of gravity of the Russian military effort is in Donetsk, and Vuhledar is basically the southern flank of that,” said Gustav Gressel, a senior policy fellow with the European Council on Foreign Relation’s Berlin office.

The grinding fight to win the area has cost Russia manpower and weapons, as Ukrainians continue to hold up defensive lines. Russia sends battalion-sized scout groups to probe Ukrainian lines and shoot artillery toward their positions with an eye to pushing north toward the critical N15 highway, a key supply route.

In remarks this week, Russian Defense Minister Sergei Shoigu said Russian troops were advancing “with success” in Vuhledar. Meanwhile, a British defense intelligence briefing said Russia’s aim was to capture unoccupied areas of Ukrainian-held Donetsk but it was unlikely to build up the forces required to change the outcome of the war.

Vuhledar’s pre-war population of 14,000 has dwindled to about 300. The majority of the town’s residents worked in the coal mine and nearby factories before the war.

Olha Kyseliova, who was recently evacuated, worked in a brick factory before the fighting upended her life.

Russian forces ramped up attacks beginning on Jan. 24, residents said. That day, a missile tore through Kyseliova’s nine-story building. She was sheltering in the basement with her three children and emerged to find a gaping hole through the roof of her third-floor apartment.

That was the moment she decided she had to leave her hometown.

Three Ukrainian brigades are positioned in Vuhledar and on the outskirts of the town. The Associated Press spoke to five commanders in units from all three. Russia’s 155 Marine infantry troops are positioned just two miles away in Vuhledar’s suburbs.

For both sides, the town is tactically important.

“It’s one of the main logistics points of the Donbas region, and also one of the main points of elevation,” said Maksym, the deputy commander of a Ukrainian marine infantry battalion. “By capturing Vuhledar, Russians can easily occupy the entire Donetsk region.”

Seizing Vuhledar would enable Russia to push forward and threaten Ukrainian supply lines feeding into the fierce Marinka front line to the north, said Gressel of the European Council on Foreign Relations.

For Ukraine, Vuhledar would be a launching pad for future counter-offensives toward Mariupol and Berdiansk.

From their perch in the town, Ukrainian forces can see into Russian lines and have so far been able to repel Russian attempts to encircle Vuhledar. Columns of Russian tanks and armored vehicles transporting infantrymen continuously assault and attempt to break Ukrainian defenses. Aviation, rockets and artillery target the town.

“But with our fighters and anti-tank equipment their attempts have not been successful,” said Maksym, the Ukrainian deputy commander. “The situation is strained, but controlled.”

Similar to other front lines along the east, the Russians are losing scores of infantrymen in an attempt to tire and weaken Ukrainian defensive lines. Serhii, the commander of a Ukrainian intelligence unit, said he saw Russian soldiers sent straight through fields mined by the Ukrainians following Russia’s capture of the village of Pavlivka, south of Vuhledar, in November.

“They de-mine our fields by using their own people,” he said.