Fort Benning is a U.S. Army base 125 miles away from the city of Atlanta, Georgia. It is first mentioned by Shane to Rick (and the other survivors) that the base is a better choice over the CDC for shelter in the episode, "Wildfire". However, the survivors chose to first travel to the CDC, but after finding a "dead end" there; the survivors decided to head towards the Fort Benning Military Base. However they later learned from Dave and Tony that Fort Benning was overrun but due to their un-trustworthiness it's unknown if they were telling the truth. However Mitch Dolgen states that he was stationed there when it was overrun and stole a tank, revealing Dave and Tony were telling the truth.
Wikipedia holds information about the military base.
Shane mentions Fort Benning as a new camp to stay at, yet Rick at the time isn't sure because he insists on going to the CDC.
Shane only mentions going to Fort Benning as an option again because Hershel tries to make them leave the farm.
According to Tony, Fort Benning is overrun by "Lame-Brains". This may or may not be true, for it is assumed that Dave and Tony were untrustworthy, yet at the time they had no reason to lie because Glenn had not brought up the farm yet.
Fort Benning is mentioned by Mitch Dolgen as having been a refugee camp after the outbreak, but had been overrun sometime in the beginning of the outbreak and by the time Tony, Dave and his group drove past, it was overrun. This could possibly mean that Dave and Tony were indeed telling the truth.
- It was mentioned by Glenn when he looked at the map at the CDC, he noticed that Fort Benning was exactly 125 miles away from Atlanta.
- Fort Benning is actually located to the south of Columbus, Georgia near the state of Alabama. It is surrounded by two rivers, making it a very defensible location.
- Fort Benning is a training ground for not only regular Infantry and Calvary units, but for U.S. Army Rangers as well. The U.S. Army Rangers are an elite, highly-trained light infantry regiment.
- Pete Dolgen mentions being stationed at Fort Benning.