context: Hitler appointed the Field Marshal Erich von Manstein to lead the newly established Don Legion group [27] to defend the front line between the A and B armies [28]. It included the 4th Panzer Army, the besieged Sixth Army, in addition to the rest of the third and fourth Romanian armies.
question: Who is the first commander of the fourth army Panzer?
answers.text: Erich von Manstein