Ruff, Siegfried, born 20-02-1895 in Kunersdorf, Brandenburg, joined the Army as a Fähnrich with the 56th Field Artillery Regiment and promoted to Leutnant on 01-09-1914. On 01-10-1938 he as an Oberstleutnant was the commander of the 1st Battalion of the 101st Artillery Regiment. Adjutant of the XXV Army Corps under command of General Karl Ritter von Prager
to 06-02-1940. Von Prager survived the war and died 31-01-1959, age 83 in Horn near Füssen. As an Oberst Commander of the 291st Artillery Regiment to 04-01-1942 and commander of the 305th Artillery Regiment to 25-09-1942. Ruff as a Generalmajor was commander of the 401st Infantry Division to 01-04-1944. Region Commander of 96 and Commander of Riga, until 01-02-1945.
The forces of the 2nd Parachute Division, 266th Infantry Division , Commander: Generalleutnant Karl Spang
and 343rd Infantry Division, under command of Generalleutnant Erwin Rauch
constituting most of the remains of the XXV Army Corps, were trapped in Brest, where they were defeated until 19 September 1944 in the Battle for Brest. Generalleutnant Erwin Rauch survived the war and died 26-02-1969 (aged 79) in Kirchenlamitz.
10-05-1945: General Fahrmbacher, commander of XXV Army Corps, surrenders at Lorient. Generalleutnant Karl Spange survived the war and died 29-08-1979, age 94, in Ellwangen
The Lorient fortress held out against the Allied siege until after the German surrender on 08-05-1945. The commander of XXV Army Corps Generalleutnant Wilhelm Fahrmbacher surrendered the fortress on 10-05-1945.
His last command as a Generalleutnant was of the 609th Division in the battle for fortress Breslau and in Soviet captivity. The youngest Generalleutnant in WWII, with 36, was Theodor Tolsdorff
the youngest General, with 42, Walter Wenck
the both survived the war. The Battle of Breslau, also known as the Siege of Breslau, was a three month long siege of the city of Breslau in Lower Silesia, Germany, now Wrocław, Poland, lasting to the end of World War II in Europe. From 13-02-1945 until 06-05-1945, German troops under Generalmajor der Pioniere, Kommandeur von “Festung” Breslau
, Hans von Ahlfen
in Breslau were besieged by the Soviet forces which encircled the city as part of the Lower Silesian Offensiv Operation. The German garrison’s surrender on 6 May was followed the next day by the surrender of all German forces.
Death and burial ground of Ruff, Siegfried.

Ruff was tried by a Soviet court and sentenced to death and hanged, age 50, on 03-02-1946 in Riga and is buried with his wife Mathilde, born Niehoff, who died old age 92, in 1987, on the cemetery Lüneburg Zentral.

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