Giffard Le Quesne Martel the Head of the Military Mission to the Soviet Union. He assessed the effectiveness of the Soviet order of battle and tactics during a visit to the frontline in the Kursk-Oryol region between 11 and 19 May 1943. In his autobiography, Martel describes advising the Soviet High Command, Stavka, to allow the Germans to strike first at the Battle of Kursk. To what extent his advice affected the course of the battle is debatable since his first conference with Stavka did not occur until late May 1943 while the Soviet Western Front commander, Marshal Georgy Zhukov, had been advocating the
Battle of Kursk term blitzkrieg (lightning war); other military historians do not use the term in their works on the battle. Operation Citadel called for a double envelopment, directed at Kursk, to surround the Soviet defenders of five armies and seal off the salient. Army Group Centre would provide General Walter Model's 9th Army to form the northern pincer. It would cut through the northern face of the salient, driving south to the hills east of Kursk, securing the rail line from Soviet attack. Army Group South would commit the 4th Panzer Army, under Hermann Hoth, and Army Detachment "Kempf", under Werner Kempf,