An ideal German support plan would have rotated several auxiliaries through the South Atlantic so that they could relieve one another and maintain continuous support for Admiral Graf Spee. The Kriegsmarine was too small to provide that system, leaving the raider dependent on Altmark alone. The pair still sustained four months of offensive operations, from September through much of December. Counting the deployment from August, they had spent about five months away and steamed thousands of miles. Keeping them operating in the South Atlantic was a logistical achievement that can be considered separately from the number of merchant ships sunk or the damage inflicted. The Royal Navy's more numerous regional bases and support ships made its ability to coordinate forces there less surprising. German endurance was substantial, while reliance on one supply ship exposed the limits of the campaign's support system.
Chapter · 5:01-7:07
German logistics in the South Atlantic campaign
With Altmark as its only supply ship, Graf Spee sustained four months of offensive operations during roughly five months deployed. That endurance deserves consideration separately from the damage the raider inflicted.