In her book "The Guns of August", Barbara W. Tuchman highlights a critical lesson from military history about the importance of flexibility in strategic planning. The German military had meticulously prepared for every possible scenario, relying on their trained staff officers to effectively handle various situations. This detailed planning was meant to mitigate the risks of unforeseen events, aligning with Clausewitz's caution that rigid plans can lead to failure. However, the Germans failed to incorporate adaptability into their strategies, which ultimately proved to be a significant oversight.

This lack of flexibility left the German military vulnerable when faced with unpredictable circumstances that they had not anticipated. Despite their thorough preparations, the rigid nature of their plans meant that they struggled to adjust to the realities of the battlefield, showcasing how an overemphasis on detail can stifle the ability to respond effectively to sudden changes. Tuchman's analysis serves as a reminder of the critical balance needed between detailed planning and the capacity for spontaneity in military operations.