The III Panzerkorps was formed in June 1942 from III Armeekorps. It fought at Kharkov and Rostov, suffering heavy losses.
It was refitted in January 1944 and fought in northern Ukraine and later in Hungary before ending the war in Austria.

Commanders

General der Kavallerie Eberhard von Mackensen (21 Jun 1942 - 21 Nov 1942)
SS-Gruppenführer Felix Steiner (22 Nov 1942 - 02 Jan 1943) m.d.F.b.
General der Panzertruppen Hermann Breith (03 Jan 1943 - 20 Oct 1943)
Generalleutnant Heinz Ziegler (21 Oct 1943 - 26 Nov 1943) m.d.st.F.b.
General der Infanterie Friedrich Schulz (27 Nov 1943 - 31 Dec 1943) m.d.st.F.b.
General der Panzertruppen Hermann Breith (01 Jan 1944 - 31 May 1944)
Generalleutnant Dietrich von Saucken (31 May 1944 - 27 June 1944) m.d.st.F.b.
General der Panzertruppen Hermann Breith (28 June 1944 - 08 May 1945)

Area of operations
Eastern front, southern sector (June 1942 - Oct 1944)
Hungary & Austria (Oct 1944 - May 1945)

Order of battle

Arko 3
Korps-Nachrichten Abteilung 43
Korps-Nachschub Truppen 403

Notable members

Ernst Merk (recipient of the German Cross in both Gold and Silver)
Dietrich von Saucken (Holder of the Knight's Cross with Oak Leaves, Swords and Diamonds)

Sources used

Microfilm Publication A-3356, German Officer Personnel files, NARA
Antony Beevor - Berlin: The Downfall 1945
Roger James Bender & Warren W Odegard - Uniforms, Organization and History of the Panzertruppe
Dermot Bradley, Karl-Friedrich Hildebrand, Markus Rövekamp - Die Generale des Heeres 1921-1945
François de Lannoy & Josef Charita - Panzertruppen: German armored troops 1935-1945
Wolf Keilig - Die Generale des Heeres
Andris Kursietis - Die Wehrmacht at War 1939-1945
French MacLean - The Unknown Generals, German Corps Commanders of WWII
Kurt Mehner - Die Deutsche Wehrmacht 1939-1945: Führung und Truppe
Friedrich Wilhelm Von Mellenthin - German Generals of WWII
Samuel W. Mitcham, Jr - The Panzer Legions: A Guide to the German Army Tank Divisions of World War II and Their Commanders
Georg Tessin - Verbände und Truppen der deutschen Wehrmacht 1933-1945
Günter Wegmann & Christian Zweng - Formationsgeschichte u. Stellenbesetzung der deutschen Streitkräfte, 1815 - 1990, Teile IV, Abt. 1:  Die Dienststellen, Kommandobehörden u. Truppenteile des Heeres, Oct.35 - May.45
Mark Yerger - Waffen SS Commanders, vol 1 & 2

Reference material on this unit

Didier Lodieu - III. Pz. Korps at Kursk
Eberhard von Mackensen - Vom Bug zum Kaukasus: Das III. Panzerkorps im Feldzug gegen Sowjetrußland 1941/42