Haen - That's an Ostfront ribbon that you see in his buttonhole.
This photo is from 1970 at a reunion of the Fernsprechkompanie of the SS-Nachrichten Sturmbann. All of these four men were among the original 400 founding members of the SS-Nachrichten Sturmbann at Berlin-Adlershof. From the left is the former SS-Hauptsturmführer Günteer Liersch, who served as a TFK in the SS-Infantrie Rgt. 9 during 41-42 and the Panzer Rgt. and Panzerjäger Abteilung of the Totenkopf Division, Herbert Schmeißer, SS-Sturmbannführer Georg Buchholz, who served as a platoon leader in the anti-tank company of Rgt. "Germania" in September 1939 and later in the Meßbatterie of the Artillerie Rgt. "Das Reich" and finally Ia of the 29.Waffen-Grenadier Division (Italian) during all of 1945 and SS-Sturmbannführer Otto Wojahn, who was a TFK in the "Wiking" signal battalion and later a O2 staff officer of the III.SS-Panzer Korps.