Unofficially Military Working Dogs are often given cute names with ranks like "Sergeant Spot" but there is nothing official about the rank. Part of the myth is that if the dog is mistreated the handler can be charged with disrespecting a superior, but there is no truth to that. read more
So was his rank. A dog in the military is like a tank, or a weapon, which represents a significant investment. You don't have to invest a piece of equipment with a superior rank to make it clear to soldiers that you don't abuse it. read more