Leadwarrior 

During WWII, it was vitally eccential for any partipisant to be able to rapidly set a reliable telephone connection in a field situation. In Wehrchmacht, it used to be done by the transmission units "Nachrichtentruppen".

The Sd.Ah.25 ( Anhänger für Feldfernkabel - one axled trailer for long distance field cable), was designed for transportation of four signal cable drums and a "Verlegewagen" (Laying Cart), and comprised an a closed box-like superstructure with folding top, mounted on the Anhängerfahrgestell A 1 - the standard single-axle trailer chassis produced for Luftwaffe before the war.

In mid-thirties, the newly established Reich Ministry of Aviation (RLM) needed powerful fire service vehicles for the air force's air bases to be able to effectively fight fires in aircraft accidents. According to the specifications, these vehicles should carry the water and foaming agent, and had to be able to dispense the extinguishing foam out of 3 tubes in 5 seconds after the vehicle stops.

The result ofthe development process was the vehicle designated as Kfz.343. Despite it was regulation's mandatory to use the diesel engines for fire trucks, in this case the Henschel 33FA1 chassis with 120Hp carbureutor engine was chosen, because the gasoline was naturally available on any airfields.

The firefighting equippment included the tank for 2,500 liters of water and 300 liters of foam, two-stage centrifugal pump FPV 25/8 (2,500 liters per minute at 8 bar) located on the front, two 20 meters and one 40-meter high-pressure hose wound on standing hose reels for the three comet air foam pipes, 5 meter long steel folding ladder, a two-piece salvage hook, two hand-held carbonic acid fire extinguishers, and two Tetra fire extinguishers, and other devices.

  Kfz.343 could tow some special trailer, like the CO2-Loschkarren as on this photo: 

In pre-war Germany Opel's role was very similar to Ford's in America. Opel cars were cheap, reliable and modern, but occupied the medium and small classes in German car production. Opel's Admiral was introduced in 1937 as an attempt to challenge large luxury cars from Horch, Mercedes-Benz and Maybach. The car was equipped with a 3.6 litre straight-6 engine with a top speed of 132 km/h (82 mph). 

The major versions were a 4-door saloon and a cabriolet, but 2-door cabriolets, Pullman limousines, hearses, and other body variants were also made in small quantities by different car-body manufacturers.

In 1939 Opel production switched to military vehicles. Because the Admiral utilized the same engine as the 3-ton Opel-Blitz cargo trucks, the production of the Admiral was canceled. A total of 6404 Admirals were manufactured in 1937-1939.

During the war Admirals were used extensively, primarily as senior officers' staff cars. Some special military variants were built using Admiral chassis, including Kubelwagens, cargo etc.

One of the most obscure version was an ambulance on an Opel-Admiral chassis,  used by the Luftwaffe. The rear part of the body was cut off, and simple wooden booth for two patients was mounted instead. 

Engineer Carl F.W. Borgward founded the "Goliath-Werke Borgward & Co." in 1928, when Germany was in the midst of deep economic and political crises. Borgward started production of affordable and reliable utility trucks of his own design. This risky enterprise was successful. Nicknamed "Blitzkarren", these 2-stroke-powered, 3-wheeled transporters with two seats were sold and exported by the thousands. Notably, in Germany until 1933, vehicles with less than four wheels and up to 350cc engines could be driven without a license and were tax-free. This subsequently formed Borgward's love of the 3-wheeler, and his appreciation of the 2-stroke principle.
Simultaneously, Carl Borgward used several production brands: "Hansa-Lloyd" for middle-class conventional 4-wheeled cars, "Borgward" for larger cars, and "Goliath" for 3-wheelers.
Production of the "Goliath F.400" 3-wheeled truck began in 1936. Its 2-stroke 2-cylinder 395cc engine delivered 12.5hp. Its top speed was 50 km/h, on a 2,5 meter wheelbase. Its maximum load capacity was 500kg. The price was RM 1225.

  At least three different body variants were proposed. The basic vehicle was a conventional flatbed cargo version: