Last week’s rebel advance has dashed a five-month truce and reignited the war in Ukraine which has killed more than 5,000 people.
In Lysychansk, near Luhansk in the east , National Guard volunteers gather their weapons as they act as back-up for the Ukrainian army.
They are waiting for the call from regular troops in nearby Debaltseve who are expecting a rebel attack any day now.
One of the volunteers known as “Menphis explained what they were up against:
“It’s really the Russian regular army because there are a lot of technics, like a quantity of tanks, there is no chance that separatists have got these as some kind of legacy from Ukraine.”
Our correspondent Sergio Cantone reports:
“The volunteers are expecting an attack that could happen any time because the front line is forever moving. That’s the reason why they are strengthening their defences.“
Separatist rebels now control half the territory of Donetsk and Luhansk provinces together known as the Donbass Region.