Click link for full article. this only pieces of it. So heartwarming..
Sadly, Dennis learned that his unit would be forced to relocate to a new base, and he wasn't allowed to bring Nubs along. As he watched Nubs race alongside his Hummer as his unit drove away from the fort for the last time, he was sure that he would never see the dog again.

But two days later, a familiar face turned up at Dennis' new base: Somehow, Nubs had managed to follow the Marine unit through the Iraqi desert on foot, all the way to their new base – 70 miles away. "I won't even address the gauntlet he had to run of dog packs, wolves, and God knows what else to get here," Dennis wrote. "When he arrived he looked like he'd just been through a war zone."

"Uh, wait a minute, he had."