Tom Hardy's etching his name in Royal Marine lore as a real life-ish action hero ... all for a great cause. The 'Dark Knight Rises' villain is now immortalized as a Royal Marine action figure back home in his native Great Britain. The camo-clad doll is being sold to support the REORG Jiu-Jitsu Foundation ... a nonprofit launched in association with The Royal Marines Charity. Last December, REORG named Hardy its head ambassador ... and he's been working with them to help combat vets improve their physical and mental recovery through jiu-jitsu. We're told REORG commissioned Green Wolf Gear --...