When Germans surrendered their weapons to Switzerland during World War II

It was the peak of winter; a group of German soldiers is crossing a border. World War II was raging across the world, and Germany has just opened a new war front with USSR.

German soldiers are stopped near a check post and asked to surrender their weapons. The soldiers receive a grey coat to cover their military uniforms. The soldiers oblige. The soldiers are not surrendering but going home. It is a peculiar incident which happens in Büsingen am Hochrhein the only German exclave inside Switzerland.