What major logistical deficiency during the American Civil War created significant preventable mortality?

Answer

The lack of a coordinated evacuation plan and organized transport

Before the implementation of standardized systems, the primary cause of preventable deaths was the inability to move wounded soldiers away from the chaotic front lines efficiently. Without an organized ambulance corps or a tiered evacuation structure, wounded men were often left where they fell for extended periods, or transport was handled by private or commandeered civilian vehicles that were inadequate for the task. This delay meant that soldiers often succumbed to shock, blood loss, or exposure before they could receive the necessary surgical intervention.

What major logistical deficiency during the American Civil War created significant preventable mortality?
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