There were civilian planes with folding wings, like the Fairchild FC-2 or the Avro Avian. The idea was to make it easier to move them by road or to store them,

There were civilian planes with folding wings, like the Fairchild FC-2 or the Avro Avian. The idea was to make it easier to move them by road or to store them, for instance in a small hangar in Northern Canada for the Fairchild, which was used as a bush plane.