Universal Soldier. 1992.
Two soldiers killed in Vietnam are brought back to life in a Military operation Uni-Sol and their memories wiped out. During a hostage rescue, one slowly regains his memory while the other believes he is still fighting a war.
This one of the decent action, science-fiction from 1992, James Cameron brought out Terminator 2 the year before and Roland Emmerich gave us this with JCVD and Dolph Lundren. I remember seeing it when it came out and loved it and it's still enjoyable. Only downside with the 4K UHD release the volume is a bit crap, the sound has been tuned up and the dialogue gets low then turn it up and basically turning it down again.
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