I've hiked and ski'd cross country terrain like this. Let me tell you, its not easy. 'Specially with a rucksack and a weapon. Then you add in people shooting at you.
Our guys are giving it their all. No matter what kind of questions any of us may have of this engagement, our men (and women) are going 110%
True, but A's for effort don't win battles.
However, some armies in the world take unit training for extreme environments a lot more seriously. Consequently their '110%' goes farther than ours.
Now don't tell me I'm 'anti-military' or something, I've been in light infantry units on active duty and I'm still in the Guard.
If we spent as much time actually training as we do on 'PowerPoint' briefings and paperwork, we'd be as good in challenging environments as the Brits.