The 16th Panzer Division (German: "16.
 Panzer-Division" ) was a formation of the German Army in World War II.
 It was formed in November 1940 from the 16th Infantry Division.
 It took part in Operation Barbarossa, the invasion of the Soviet Union in June 1941, operating in the southern sector of the Eastern Front.
 After the Soviet offensive in November 1942 the division was trapped in Stalingrad, where it surrendered in February 1943.
 A new 16th Panzer Division was formed in 1943 and sent to Italy where it was part of the unsuccessful German defense against the Allied invasion of Italy.
 Sent back to the Eastern Front in November 1943 the division once more saw action in the southern sector, taking part in the relief operation of the Korsun-Cherkassy Pocket and being part of the Kamenets-Podolsky pocket.
 It eventually surrendered to Soviet and US American forces in Czechoslovakia in May 1945.
Operation "Winter Storm" (German: "Unternehmen Wintergewitter" ) was a German offensive in World War II in which the German 4th Panzer Army unsuccessfully attempted to break the Soviet encirclement of the German 6th Army during the Battle of Stalingrad.
The 5th Panzer Army, also known as Panzer Group West and Panzer Group Eberbach (German: "5.Panzer-Armee", "Panzergruppe West", "Panzergruppe Eberbach") was a panzer army which saw action in the Western Front and North Africa.
 The remnants of the army surrendered in the Ruhr pocket in 1945.
The 6th Panzer Army ("6.
 Panzer-Armee") was a formation of the German Army, formed in the autumn of 1944.
 The 6th Panzer Army was first used as an offensive force during the Battle of the Bulge, in which it operated as the northernmost element of the German offensive.
 The army was subsequently transferred to Hungary in early 1945 and used in both offensive and defensive actions there.
 The final battles of the 6th Panzer Army were fought in Austria until the collapse of Nazi Germany, at which point the army was completely demoralized.
 The remnants of the army eventually surrendered to the United States Army.
 Army commander throughout the army's existence, SS-"Oberstgruppenführer" Josef Dietrich said in early 1945: "We call ourselves the "6th Panzer Army", because we've only got 6 Panzers left".
The 34th Guards Rifle Division was originally formed on 29 August 1942 from the 7th Airborne Corps in the Moscow Military District.
 It was assigned to the 28th Army, part of the Southern Front.
 In April 1943, it was transferred to the 5th Shock Army, which later became part of the 4th Ukrainian Front.
 After participation in retaking Yenkiyevo, it was awarded the battle honour.
 In January 1944, it became part of the 31st Guards Rifle Corps of the 46th Army.
 In November 1944 it was finally transferred to the 4th Guards Army, which it was part of for the rest of the war.
 During Operation Konrad I, the 34th Guards were pushed back by battlegroups from the 6th Panzer Division and 8th Panzer Division.
The 4th Panzer Army (German: "4.
 Panzerarmee") was, before being designated a full army, the Panzer Group 4 ("Panzergruppe 4"), a German panzer army during World War II.
 Its units played a part in the invasion of France, and then on the Eastern Front.
Operation "Uranus" (Russian: Опера́ция «Ура́н», romanised: "Operatsiya "Uran"" ) was the codename of the Soviet 19–23 November 1942 strategic operation in World War II which led to the encirclement of the German Sixth Army, the Third and Fourth Romanian armies, and portions of the German Fourth Panzer Army.
 The operation formed part of the ongoing Battle of Stalingrad, and was aimed at destroying German forces in and around Stalingrad.
 Planning for Operation "Uranus" had commenced in September 1942, and was developed simultaneously with plans to envelop and destroy German Army Group Center and German forces in the Caucasus.
 The Red Army took advantage of the German army's poor preparation for winter, and the fact that its forces in the southern Soviet Union were overstretched near Stalingrad, using weaker Romanian troops to guard their flanks; the offensives' starting points were established along the section of the front directly opposite Romanian forces.
 These Axis armies lacked heavy equipment to deal with Soviet armor.
The 17th Panzer Division (German: "17.
 Panzer-Division" ) was a formation of the Wehrmacht in World War II.
 It was formed in November 1940 from the 27th Infantry Division.
 It took part in Operation Barbarossa, the invasion of the Soviet Union in June 1941, and in the winter of 1941–42 participated in the Battle of Moscow.
 In November 1942, the division was sent to the southern sector of the Eastern Front where it participated in Operation Winter Storm, the failed attempt to relieve the surrounded troops at Stalingrad.
 The division was held in reserve during the Battle of Kursk in 1943, and thereafter retreated through Ukraine and Poland, before ending the war in Czechoslovakia.
Hermann Hoth (12 April 1885 – 25 January 1971) was a German army commander and war criminal during World War II.
 He fought in the Battle of France and as a panzer commander on the Eastern Front.
 Hoth commanded the 3rd Panzer Group during Operation Barbarossa in 1941, and the 4th Panzer Army during the Wehrmacht's 1942 summer offensive.
The Battle of Arracourt was a major clash between U.S. and German armored forces near the town of Arracourt, Lorraine, France, between 18–29 September 1944, during World War II.
 As part of a counteroffensive against recent U.S. advances in France, the German 5th Panzer Army had as its objective the recapture of Lunéville and the elimination of the U.S. XII Corps bridgehead over the Moselle River at Dieulouard.
 With local superiority in troops and tanks, the Germans anticipated quick defeat of the defending Combat Command A (CCA) of the U.S. 4th Armored Division.
 However, due in part to poor German tactics and the terrain, the 4th Armored Division's CCA, in concert with U.S. tactical air forces, defeated two Panzer Brigades and elements of two "Panzer" divisions in a series of engagements over an eleven-day period.

Question: The German 4th Panzer Army participated in what operation in November 1942?
Answer: Operation Winter Storm