Ukrainian forces withdrawing from Avdiivka

After grueling months of fighting Russian forces, Ukrainian troops have withdrawn from the battered town of Avdiivka, the armed forces commander said Saturday.

The retreat expands Moscow’s control of Ukraine’s east and deliversa symbolic victory for President Vladimir Putin as he is about to be re-elected.

Col. Gen. Oleksandr Syrskyi, the commander-in-chief of Ukraine’s armed forces, said he ordered the withdrawal "to avoid encirclement and preserve the lives and health of servicemen."

"I decided to withdraw our units from the city and move to defense on more favorable lines," Syrskyi said in a statement on Facebook Saturday local time.

This marks the most high-profile retreat for Kyiv’s forces since Russia’s capture of another eastern city of Bakhmut, just 30 miles north of Avdiivka, last May. Although the town doesn’t hold great strategic significance, its seizure could addto the mounting pressure on Kyiv to hold its positions amid faltering Western aid and critical ammunition shortages.

It’s also the first major retreat under Syrskyi, who was named Ukraine’s new commander-in-chief a week ago. Syrskyi was brought in by President Volodymyr Zelenskyy in hopes of a “different approach” and to turn things around on the battlefield.

"We are taking measures to stabilize the situation and maintain our positions," Syrskyi said in announcing the withdrawal. He also vowed to return.

Ahead of the retreat, Syrskyi’s forces tried to dig in. The country’s military said it was bringing in battle-hardened reinforcements and more ammunition.

But an artillery sergeant fighting in the town for several months told NBC News that his unit had faced severe restrictions on how many rounds it could fire daily amid shortages compounded by