Articles: meet sergeant rex - american thinker, Everyone has heard of rin tin tin, but sergeant rex is the real-life german shepherd military dog. by all accounts, he had a great reputation for being a superior. Sgt. rex and ex-marine handler to be reunited - abc news, It looks like sgt. rex, the marine bomb-sniffing dog, will finally be reunited with his former handler, who had launched a high-profile campaign to adopt him..