From what i have seen the third one and the latest as far as i am aware was a tad bit better then the first. The second was straight to video like the third but the third was an attempt to rescue the very bad second in which case did not. The first had very good visual effects for the time it was made even though everyone died stupidly. I can just imagine adding some dialog: "You, go over there and die stupidly." "Private Bob, go over in the open and die even more stupidly." "Sgt Billy, back track around over the closed pass where no one can here or see you and die." Then i'll go over here and die even more so stupidly."