Operation Citadel opened on 5 July 1943 against the Soviet-held Kursk salient, after months of delay that the Red Army used to pack the bulge with mines, guns, and reserves. Model attacked from the north, Manstein's wing from the south. The German strategic aim -- to pinch off the salient and regain initiative after Stalingrad -- failed within two weeks.
Prokhorovka (12 July) became the named armour clash of the south, later inflated in Soviet and popular accounts into the "greatest tank battle" with tidy integers the archives do not support. Casualties on both sides run into the hundreds of thousands across July-August when the Soviet counteroffensives (Orel, Belgorod-Kharkov) are included -- a campaign, not a single afternoon.
Kursk ended German hopes of a 1943 summer decision in the east. English memory is thinner than Stalingrad or Normandy; wargamers and tank books over-weight Prokhorovka. For this atlas it is the high-intensity sequel to the Volga pocket -- and a reminder that "largest tank battle" is a caption to handle with ranges.
Frequently asked questions
When was Kursk?
Citadel: 5-16 July 1943 in most operational datings. The wider battle including Soviet counteroffensives runs into 23 August 1943 (Kharkov's liberation in that wave).
How many casualties?
Hundreds of thousands on both sides across the campaign is the honest band. Single-day Prokhorovka integers in old popular books are often too neat.
Was it the largest tank battle?
It was among the largest armour concentrations of the war. "Largest" depends on what you count (day vs campaign, runners vs hulls). Use the question, not a fake record plaque.
Why did Citadel fail?
A prepared, deep Soviet defence, German delay, limited reserves, and a strategic context (Sicily, the long 1943) that forbade a long slugfest.
What was Prokhorovka?
A 12 July clash on the southern face, important and later mythologised. It did not by itself "destroy the Panzerwaffe" in a single afternoon.
What followed?
Soviet offensives took Orel and Kharkov. Germany did not launch another strategic summer offensive in the east.
Who commanded?
Model (north), Manstein / Hoth (south), Zhukov and Vasilevsky at Stavka, Rokossovsky and Vatutin on the fronts, Konev's Steppe Front in reserve.
Is this a tank-tactics guide?
No. It is a historical campaign file.