Our Ukraine correspondent joe inward reports, this is the reality of the battle for several Donetsk.

Close quarters combat said to be as brutal as anything seen in europe since the second World war.

These men, including british and american soldiers, are members of Ukraine's foreign legion.

They've traveled from around the world to resist Russia's invasion.

Many have paid with their lives, but others have been captured including reportedly to US veterans.

If we had reason to um belief, uh credible reason to believe that these individuals were in Russian custody, we would pursue that as appropriate.

Right across the east.

Ukrainian forces are digging in preparing for an expected Russian push in the woods outside Slovyansk.

They wait at the start of this war, they're light infantry tactics, mobile units out thinking their opponents won famous victories.

Now they are on the back foot against their better armed enemy.

The most important thing is that the guys are not afraid, they rush into battle.

They are worried of course everyone would be worried, but everyone has something behind them, conscience honor Ukrainians are using every tool at their disposal to fight this war.

This is a special forces drone unit operating right on the front lines.

I'm looking for a vehicle.

But look at what they're up against as they film shells land nearby and then below their drone, A Russian fighter strikes.

Ukraine desperately needs more equipment.

The West says it is coming.