I had old Marines tell me they drove all night to Florida, too
LOTS of them
The Army took quite a few truckload and buses too, I heard
Also, that some naval vessels DID exchange fire and took the bridge off a Russian destroyer
I was ten years old at the time, living in Clewiston FL on (approx) U.S. 27. Convoys all day and night for three days. Mainly Army bivouacking on every piece of free space. Very little armor, heavy Nike missile, lot's of water, fuel trucks, etc..
Some thought the world (as we know it), was going to end.
Halloween was good that year.
5.56mm