In short: Yes. Many soldiers of the Wehrmacht continued fighting after Karl Donitz gave the order to surrender.

Long answer: Karl Donitz, acting Chancellor of Germany following Adolf Hitler’s suicide, made the ultimate decision to surrender to the Allies. The Allies had been working at Mach speed to defeat the Germans, and in their haste left several large pieces of territory under German control behind their lines. There were remaining Wehrmacht outposts scattered over hundreds of miles, both in Germany and formerly German-occupied European nation. After the Allied wave passed, these outposts remained under German control, or, perhaps more accurately, under the control of the Germans who were inhabiting it pre-surrender.

For instance, there was an area called Dessau where American and Soviet forced intended to meet and crush the Germans who were in between their lines, but never came to that goal, due to unknown reasons the American and Soviet lines never met, leaving a massive swath of land still occupied by the Germans, still with completely functioning infrastructure. Amazingly, the Germans in Dessau lived fine. They ran their own post offices, used a telephone system, used vehicles, etc, all under the guard of a sizable group of German soldiers, with the Allies completely unaware of their presence.

Dessau was not an isolated instance, places like Dessau existed all over post-surrender Germany. In the North, Schlutzstaffel (SS) troops remained, holding out in camps in the forests of Bad Segeberg. Here, they dug in and fortified themselves, refusing surrender. The British commanded the newly controlled Germans to eliminate these remaining members of the SS.

The last Germans to lay down their arms held out for one hundred and twelve days following the surrender, when they capitulated to Norwegian seal hunters on Bear Island in the Barents Sea. Four months after the initial German surrender and several days following the Japanese surrender, these last remnants of the Wehrmacht had lost contact with headquarters before the surrender in May, this detachment had no idea the war wasn’t still ongoing.

Across both Germany and German-occupied Europe, members of the Wehrmacht were either not informed of the surrender or chose to ignore it, and continued fighting long after the order to surrender was given.