Russian combat signalmen in action during Ukrainian invasion.

Russia's Ministry of Defence released a video showing the combat work of signalmen operating in Ukraine.

Signalmen are in charge of communications between the front lines and the headquarters.

During the 2022 Ukraine invasion, an inability to communicate -- up and down the chain of command and across branches of the Russian military -- impeded Moscow's war plans.

Only three weeks after hostilities began, the Internet was already filled with photos of cheap Chinese civilian walkie-talkies that the Russian military was forced to use instead of professional equipment, intercepts of conversations of Russian officers who had to call each other on regular phones, and testimonies of prisoners who tell how they could not call for reinforcements or find the right way due to lack of communication with the outside world.

Evidence suggests that some of the roots of the Russian communication lapses lie in mismanaged development and procurement processes for things like tactical military radios, undertrained and under-deployed specialists, and the challenges of operating on foreign soil, where the enemy controls not only cellular networks but also wired communications that frequently serve as a reliable backup channel.

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