Well, I've always thought that the Mujahideen rebel fighters in Afghsnistan fit the bill.They were big news in the UK at the time the song was written and of course they left their homes in the valleys to fight a guerilla war from the mountains. It also gave those fighters an " Everyman" quality rather than the professional soldiers in the Falklands War. Of course, I'm sure Matk drew inspiration from a number of sources.