The Azov brigade, which leaders say has a culture of ‘mutual respect’, is tasked with repelling relentless Russian attacks as the invaders make most of artillery mismatch

Fifteen miles east of the garrison town of Lyman, a desperate fight has been taking place on Ukraine’s eastern front for months. The once verdant Serebryansky pine forest has been reduced to burnt-out stumps, reminiscent of images from the Somme, destroyed amid Russian attacks aimed at eliminating Ukrainian foxholes.

Fearful that the frontline could crack last summer, Ukraine’s commanders deployed the Azov infantry brigade to the sector. Their task was and is to repel what “Maslo”, a 29-year-old staff sergeant with the unit’s first battalion, described as “constant assaults, every day, sometimes for 24 hours”. Occasionally the brigade makes dangerous counterattacks on foot.

Exclusive: Dmytro Kuleba hails US aid package but says allies need to increase arms production to help fight Russia

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Ukraine’s foreign minister has enthusiastically praised US politicians for approving a long-delayed $61bn military aid package for Ukraine, but cautioned that fresh supplies would not immediately turn the tide on the battlefield.

“Hallelujah,” Dmytro Kuleba said when asked for his reaction to Tuesday’s final vote by the US Senate. He said it had been “my belief that we would have a positive outcome”, based in part on the cultivation of religious conservatives, but the west had to “realise the era of peace in Europe is over” and build its defence industry.