What innovative supply chain solution did the Allies implement to provide fuel to the advancing forces after the D-Day landings in 1944?

Operation Overlord (D-Day) was not only a massive military operation but also one of history's greatest logistical challenges. The Allied forces had to coordinate the supply of equipment, ammunition, food, and medical supplies for over 150,000 troops landing on the beaches of Normandy. This poll tests your knowledge about the innovative supply chain solutions that made this pivotal World War II operation possible.

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Operation PLUTO (Pipe-Lines Under The Ocean) - underwater pipelines across the English Channel
The Red Ball Express - a dedicated convoy system using exclusively steam-powered vehicles
Operation Mulberry - converting captured German submarines into underwater supply transports
The Churchill Solution - specially designed amphibious tanks that could transport fuel while fighting