Soldier of Fortune

The name of this movie is Soldier of Fortune released in 1990-04-28 and it's main theme is How can it be Johnny Hondo-inspired third world mayhem if some guy named Vincent Miles is running around gunning down Russkies, hanging off of helicopters and battling the entire Soviet military with just a dirt bike? Well, putting aside the fact that only Johnny Hondo would be capable of doing all that, it's because Vincent Miles is really Johnny Hondo We know this because the rogue Russian special services guy says so, but unfortunately Vincent/Johnny has no memory of this Why? Because the Russian shot him in the head in a flashback and Johnny caught him a dose of the amnesia What? You didn't know you could get amnesia from taking a bullet in the brain? Maybe you were shot in the head, too and just forgot.