“The Little Can That Could”, 1987-02 (; backlinks):
…Hitler knew this. He perceived early on that the weakest link in his plans for blitzkrieg using his panzer divisions was fuel supply. He ordered his staff to design a fuel container that would minimize gasoline losses under combat conditions. As a result the German army had thousands of jerrycans, as they came to be called, stored and ready when hostilities began in 1939.
The jerrycan had been developed under the strictest secrecy, and its unique features were many. It was flat-sided and rectangular in shape, consisting of 2 halves welded together as in a typical automobile gasoline tank. It had 3 handles, enabling one man to carry 2 cans and pass one to another man in bucket-brigade fashion. Its capacity was ~5 US gallons; its weight filled, 45 pounds. Thanks to an air chamber at the top, it would float on water if dropped overboard or from a plane. Its short spout was secured with a snap closure that could be propped open for pouring, making unnecessary any funnel or opener. A gasket made the mouth leakproof. An air-breathing tube from the spout to the air space kept the pouring smooth. And most important, the can’s inside was lined with an impervious plastic material developed for the insides of steel beer barrels. This enabled the jerrycan to be used alternately for gasoline and water.
Early in the summer of 1939, this secret weapon began a roundabout odyssey into American hands…Back in the United States, Pleiss told military officials about the container, but without a sample can he could stir no interest, even though the war was now well under way…Pleiss immediately sent one of the cans to Washington. The War Department looked at it but unwisely decided that an updated version of their World War I container would be good enough. That was a cylindrical ten-gallon can with 2 screw closures. It required a wrench and a funnel for pouring. That one jerrycan in the Army’s possession was later sent to Camp Holabird, in Maryland. There it was poorly redesigned; the only features retained were the size, shape, and handles. The welded circumferential joint was replaced with rolled seams around the bottom and one side. Both a wrench and a funnel were required for its use. And it now had no lining. As any petroleum engineer knows, it is unsafe to store gasoline in a container with rolled seams. This ersatz can did not win wide acceptance.
The British first encountered the jerrycan during the German invasion of Norway, in 1940, and gave it its English name (the Germans were, of course, the “Jerries”). Later that year Pleiss was in London and was asked by British officers if he knew anything about the can’s design and manufacture. He ordered the second of his 3 jerrycans flown to London. Steps were taken to manufacture exact duplicates of it. 2 years later the United States was still oblivious of the can.
…The British historian Desmond Young later confirmed the great importance of oil cans in the early African part of the war. “No one who did not serve in the desert”, he wrote, “can realise to what extent the difference between complete and partial success rested on the simplest item of our equipment—and the worst. Whoever sent our troops into desert warfare with the [five-gallon] petrol tin has much to answer for. General Auchinleck estimates that this ‘flimsy and ill-constructed container’ led to the loss of 30% of petrol between base and consumer…The overall loss was almost incalculable. To calculate the tanks destroyed, the number of men who were killed or went into captivity because of shortage of petrol at some crucial moment, the ships and merchant seamen lost in carrying it, would be quite impossible.”
After my colleague and I made our report, a new 5-gallon container under consideration in Washington was canceled. Meanwhile the British were finally gearing up for mass production. 2 million British jerrycans were sent to North Africa in early 1943, and by early 1944 they were being manufactured in the Middle East. Since the British had such a head start, the Allies agreed to let them produce all the cans needed for the invasion of Europe. Millions were ready by D-day. By V-E day some 21 million Allied jerrycans had been scattered all over Europe. President Roosevelt observed in November 1944, “Without these cans it would have been impossible for our armies to cut their way across France at a lightning pace which exceeded the German Blitz of 1940.”
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