Everything everybody else has said is true. This game is brilliant. It just goes to show how, back in the day, programmers, designers and publishers cared about doing the research and getting the subject matter right. This sort of game won't get written again because publishers don't want to spend the time getting games like this right. That's why we get so many fantasy rpg's and so few historical. The former you can make up as you go along, the latter you need to research.
(Fantasy game: Your captured and put in a cell. There is a knife hidden under the bed and a bone. You use the knife to crush the bone, shout an incantation over the bone and materialize outside the prision. Now the same problem, but you're in a vietcong POW camp with guards outside. Same knife same bone, but now you have to think: How would you escape a POW camp with just a knife and a bone? Can't make it up as you go along anymore - not if you want to be historically correct!)
I have this game on CD. Got it on ebay about a year ago for ?6 ($10). I have kept a win98/XP system so I can play old and new games. I run this in DOSBox on XP with no problems and run it native on my win98 system using Moslo to slow it down, again with no problems.
I'll finish by saying it's about a 2.6 meg download, if you can find it out there on the 'net. But even for ?15 ($25) on ebay, this game would be a bargain, as it has hundreds of hours of gamplay in it!
UNHAPPY GAMER: Look under every leaf, there could be traps, but you may find what your looking for......