Col Denis Kozlov, 40, was killed in the besieged country and had replaced Colonel Sergei Porokhnya, 45, who died on March 14.
Local media in Russia confirmed the colonel “heroically died on May 11 when guiding a pontoon ferry to make a further advance of the troops.”
Kozlov was the second commander of the 12th Separate Guards Engineers of Keningsbersko-Gorodokskaya Red Banner Brigade to have been killed since the start of the invasion.
He was among Russian troops to perish in a failed advance across the Seversky Donets River when he and his men were ambushed by a devastating Ukrainian attack.
He was posthumously decorated with the Russian Order of Courage, and laid to rest in his hometown Murom.
His death highlights the huge toll suffered by Putin’s top brass.
Nine Russian generals are also known to have died with reports that the US has assisted Ukraine with intelligence to allow them to target Putin’s top brass.
The attrition rate is around one colonel every two days.
The Daily Star has previously reported how UK intelligence revealed Putin is likely to have lost around a third of his troops sent to war in February.
On May 15, the UK intelligence said the offensive has “lost momentum and fallen significantly behind schedule”.
“Russian forces are increasingly constrained by enabling capacities, continued low morale and reduced combat effectiveness,” they said.
“Many of these capabilities cannot be quickly replaced or reconstituted and are likely to continue to hinder Russian operations in Ukraine.”
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