Underground tunnel warfare intensifies near Kupjansk as troops crawl through gas pipes

Military expert Markus Reisner reports that soldiers near Kupjansk are engaging in tunnel combat, crawling through gas pipes while facing drone surveillance and barricades. This marks an escalation in close-quarters subterranean warfare on the eastern front, reflecting the grueling nature of the conflict. The situation underscores the tactical adaptation of both sides to the static frontline.

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