Germans Surrender To Montgomery: Field Marshal Montgomery signing the Instrument of surrender document. In the background is General Admiral Von Friedeburg, Supreme Commander of the Germen Navy. At 6.25 P.m. on May 4th, in an ordinary Army hut at 21st Army group H.Q. on May Lunsberg Heath, 5 German Plenipotentiares in the presence of Field Marshal Montgomery put their signatures to the surrender of the German land, sea and air force in Northern Germany, Holland and Denmark. This historic picture was taken during the signing of the surrender. May 04, 1945. (Photo by Planet News Ltd.).