But some like Volodymyr Onysko volunteered to fight.

"We know why we are here. We know why we defend our country. And our guys that are actually standing there and fighting Russian military forces,'' he told Britain's Sky News. "We know what we are doing and that's why we will win.''

Others, like British Army veteran Mark Ayres, travelled to Ukraine to help.

Ayres said the Ukrainian people have been inspiring and "it's galvanized, everybody.''

"I've got no illusions. I've got no romantic ideas of war or like `I'm going to be some hero' or make a difference. but it is what I do,'' Ayres said.