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In 9 July 1942 the Corps was reorganised as the XXXIX Panzer Corps. It was shifted to the Rzhev salient, under the 9th Army of Army Group Centre, where it was involved in Battle of Rzhev in the summer of 1942. Army Group Centre evacuated the Rzhev salient early in 1943. During the autumn, the Corps took part in the defence against Operation Suvorov, withdrawing to positions east of Mogilev.
During June 1944 the XXXIX Panzer Corps took part in the defence against the Soviet summer offensive, Operation Bagration; covering the strategically important highway through Mogilev, it was one of the strongest corps in the Army Group at the time, with four high-quality divisions. Soviet breakthroughs to the north and south saw the Corps threatened with encirclement within a matter of days, while the 12th Infantry Division was encircled in Mogilev and destroyed. The corps commander, General Robert Martinek was killed on 28 June and his replacement Otto Schünemann, was killed the following day. The Corps disintegrated at the Berezina River crossings as its columns attempted to cross the river under heavy air attack; nearly all its units were destroyed by the 2nd Belorussian Front in the subsequent encirclement east of Minsk. The commanders of the 110th, 12th, 31st and Feldherrnhalle Divisions, Kurowski, Bamler, Ochsner, and Steinkeller respectively, were all captured.
The Corps was reformed by redesignating Gruppe von Saucken, composed of ad hoc battle groups along with the 5th Panzer Division and commanded by Dietrich von Saucken. Renamed XXXIX Panzer Corps, it fought for the control of Minsk and then retreated in the face of the subsequent stages of the Soviet strategic offensive through Belarus, Poland and Lithuania, being pushed back into the Courland Pocket. During this period, the rebuilt Corps was reinforced with the 4th and 12th Panzer Divisions as well as the Panzergrenadier Division Großdeutschland, taking part in Operation Doppelkopf. Late in the year it was redeployed to East Prussia before being reorganised and withdrawn for use in the Ardennes Offensive. It was assigned to Hasso von Manteuffel's 5th Panzer Army.
After the defeat of the Ardennes offensive in the Battle of the Bulge, the Corps was redeployed against the Soviet offensives in Pomerania as part of the newly organised 11th SS Panzer Army, Army Group Vistula. It was employed in Operation Solstice, the failed counter-offensive at Stargard against the spearheads of the 1st Belorussian Front. On 27 March the Corps was thrown into a disastrous counter-attack to relieve the fortress of Küstrin, and was almost entirely destroyed.
Commanders
Generaloberst Rudolf Schmidt (1 February 1940 – 10 November 1941)
Mitcham, Samuel W. (2006). The Panzer Legions: A Guide to the German Army Tank Divisions of World War II and Their Commanders. Mechanicsburg, Pennsylvania: Stackpole Books. ISBN0-811733-53-X.