By reading the plot it looks very similar to this Korean movie:
http://www.imdb.com/title/tt0417072/plotsummary
I'll try to get it and see...
Keep you guys posted.
EDITED:
I just watched the movie last night and although the premise is the same as the other movie, the plot is completely different.
I still enjoyed it.
The description sounds a little like "The Devil's Rock" to me.
shareSounds more like the Korean horror film "The Guard Post".
This was also about a group of soldiers visiting a seemingly deserted base that was
manned by soldiers who were mysteriously killed off.
I recommend this one for those who liked this movie in particular.
It is difficult to free fools from the chains they revere.
Voltaire