- We try to surround them (the Russians).

They resist, but we believe we will succeed, says platoon leader Denis on a rooftop in one of the city's suburbs.

He is confident of victory.

On Monday and Tuesday, Ukrainian forces liberated two nearby villages, he said.

The platoon consists of ordinary guys with regular jobs.

Their task is to guard liberated neighborhoods from thieves and infiltrators.

- There can be many spies and informants.

They can wear our uniforms or look like civilians, so we have to check them too, says soldier Jevhen, who investigated economic crimes before the war.

Follow the volunteer soldiers in the clip above.