Low morale among Russia’s ranks continues as its troops remain rankled over fighting in tin "cans" while Moscow leans on Belarus for support, according to a U.K. intelligence update Thursday.

The U.K.’s defense ministry addressed that "Russian soldiers serving in Ukraine are likely frustrated that they are forced to serve in old infantry combat vehicles" and said they have described their dated tanks as "aluminum cans."

According to the intelligence update, Russian forces lost "a battalion’s worth of equipment" each day in mid-October as Ukrainian troops advanced on the front lines – particularly in the southern Kherson region, where Ukrainian forces look to push occupying troops across the Dnieper River. 

Ukrainian soldiers inspect tank

Ukrainian soldiers inspect a damaged Russian tank on a road near the recently retaken village of Kamianka, Kharkiv region, Ukraine, Sunday (AP Photo)

RUSSIA'S REINFORCEMENTS: WHERE PUTIN HAS FOUND MORE WEAPONS AND TROOPS AS UKRAINE INVASION DRAGS ON

As Russia began to see armored vehicle losses mount to more than 40 a day last month, the U.K. assessed that Russian President Vladimir Putin turned to his longtime ally, Belarusian President Alexander Lukashenko.

Lukashenko has walked a tight line when it comes to the war in Ukraine by backing Russia’s war effort, allowing Moscow to deploy from Belarus’ borders and use its airspace. 

He has also sent troops to his southern border where Russian soldiers are stationed, but he has yet deploy invading forces into Ukraine.

The U.K. defense ministry has also assessed that Minsk has given Russia at least 100 additional tanks and infantry fighting vehicles from its stocks – though this limited supply is not believed to be efficient to effectively aid Putin’s war ambitions. 

Russia tanks

Russian tanks damaged in recent fighting are seen near the recently retaken village of Kamianka, Kharkiv region, Ukraine, Sunday, Oct. 30, 2022. (AP Photo)

RUSSIA REJOINS UKRAINE GRAIN EXPORT WARTIME DEAL

"Armored units and artillery are central to Russia’s way of war," U.K. defense officials said Thursday. "The force in Ukraine is now struggling partially due to difficulties in sourcing both artillery ammunition and sufficient serviceable replacement armored vehicles."

Putin’s "special military operation" has raged for more than eight months with Ukraine making recent significant advances in large part due to Western arms.

On Thursday, Moscow summoned British Ambassador Deborah Bronnert over allegations that the British Navy played a role in the drone attack on Russia's Black Sea fleet stationed off of Crimea last week, reported Reuters. 

Ukraine makes gains against Russian forces

Remains of a destroyed Russian tank are scattered on the ground along the road between Izium and Kharkiv, Ukraine, Monday, Oct. 3, 2022. (AP Photo/Francisco Seco)

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The attack, which Kyiv has denied involvement in and even suggested it was a military error in Russia’s own ranks, prompted Moscow to suspend its participation in the grain export deal. 

Details of Bronnert’s 30-minute chat with Russian officials Thursday remain unclear, though Britain has denied any involvement in the drone attack.