The strategic decision to leave East Prussia, a crucial area known for its historical ties to the Junker class and the Hohenzollern dynasty, was fraught with concern. The limited military presence of merely nine divisions made this choice particularly alarming. Military leaders grappled with the implications of such a withdrawal, weighing the risks against their operational goals.

Frederick the Great's famous principle emphasized that preserving a unified force is more critical than holding onto a territory. This idea resonated deeply with commanders, offering reassurance amidst difficult choices. Tuchman's narrative highlights how past military wisdom can guide contemporary strategies, reflecting the enduring nature of such military philosophies.