The CDF is one of the main factions in the After the Flash series founded by civilian survivors of the Flash with the intent of protecting other wastelanders, leading them to a better life and to a new nation built out of the ashes. Until 2096, in which the CDF was converted into the military of the newly founded People's Republic of Tidewater (PRT), and due to it's funding from Brazil, the PRT improved its standards of training and was able to supply themselves with better equipment. By the events of ATF: Deep Six, the PRT are strong enough to rival the USCPF.
The CDF in After the Flash: Deep Winter
The earliest version of the CDF plays during 2039 under the guise of a nameless militia and a group of civilian scavengers in Georgia known simply as ground-walkers. Their territory consists of the Den and a groundwalker camp near a NATO bomber crash.
The CDF in After the Flash: Deep Winter is described as a rather large group of survivors who live in the underground sewage system on the north side of Half Moon Creek, shunning mutants, and have somewhat better living standards compared to the average post-Flash survivor with clean water, a supply of food and complex medical equipment like de-radiators. The militia can be identified by a thick, light-yellow armband on one of the biceps.
The CDF in After the Flash One, Sandstorm and Rain
The CDF most people are familiar with first come into play in After the Flash... during the year 2047 known as the "Civilian Defense Force" occupying a scrap town coiled as Bridge Town on a highway in the outer banks of North Carolina. The CDF can be identified from their thin, solid yellow armbands with a gas mask decale. The Civilian Defense Force have the simple goal to help fellow, unarmed refugees to safety and to form a new government.
The CDF under a new name, the "Civilian Defense Front", evolve once again in After the Flash: Sandstorm as a more influential faction in 2067. The CDF own more territory in the Rockport area such as Dock Town, Subzone 2, the Bank, the Hotel and the gates including the gated portions of the Florida highway. The new motto of the CDF is stated as, "By civilians, for civilians."
The CDF in After the Flash: Rain expand even further into the isolated island Oahu, Hawaii and stand as one of the last remnants of the traditional Civilian Defense Front in Pearl City, 2103. The CDF occupy Crane Town, Masterson Valley, including its factory and its bunker which they utilize in order to maintain Crane Town and the CDF itself.
The CDF in After the Flash: Deep Six
The CDF in After the Flash: Deep Six establishes the People's Republic of Tidewater as an official government to rival that of the United States of America during the Atlanta Crisis and act as Tidewater's main military power, also known as the PRTM. The PRTM in Deep Six is a unit stationed in Georgia as the 4th Georgia Guard Division stationed in Fort Wilmington, also known as the "Blue Shield" division, tasked with holding the frontier of Half Moon. The division in Deep Six consists of two companies; the veteran Brown Company with two platoons left and full fresh Easy Company.