This pretty neat Bundeswehr film from 1988 shows REFORGER operations, specifically setting up an ersatz airfield on a closed portion of autobahn.
First come the standard Luftwaffe planes of the day, to include Panavia Tornados, Dornier Alpha Jets and F-4E Phantoms (using drogue chutes) along with some twin-engined Transalls.
Then follows some American C-130s, which unload a lot of plane handling gear, security forces, and ordnance.
Finally, some RAF SEPECAT Jaguars, Royal Netherlands Air Force F-16s and USAF A-10s and F-15s show up to make NATO Cold War lineup complete, with the latter picking up some freshly unloaded Maverick AGMs.
The concept dated back to the 1940s, when the old Nazi Reichautobahn was set up with just such a use in mind.
This 1973 film shows a group of 24 Fiat G.91 “Ginas” set up such a field in a day.
Some 29 Autobahn-Behelfsflugplatz/Autobahnflugplatz areas were created by the West Germans during the Cold War, with the length running between 2,000 and 5,000m. While most were demolished around 2005, several have been rebuilt in recent years and could still, in theory, pull off their assigned task if needed.