Bargain
I remember a call from the Falklands was about a pound a minute.
However with the technology available now, the calls should be free.
British soldiers on active service will get an extra half-hour of phone calls home this Christmas, and cheaper calling from Afghanistan too. Soldiers already get half an hour of free phone calls to the UK every week, and will get an extra half-hour for Christmas. Those in Afghanistan will be able to buy more minutes for 6.5 …
Firstly you presume that Internet bandwidth is free - it isn't. Assuming they can't just sling a fibre a few hundred miles to the nearest PoP, they'll have to use satellite - and that's definitely not free.
Secondly - Even if it were possible - you think it's OK to bring the public Internet into a military facility in a war zone? I can't see anything bad ever happening with that, after all - it's not like anyone has any malicious intent towards our soldiers is it?