Tracks on the tanks and the 162a Light Dragon Artillery Tractor were done with wire-link sprocket chain wrapped around the hubs.
2.
Sprockets and chains are also used for power transmission from one shaft to another where slippage is not admissible, sprocket chains being used instead of belts or ropes and sprocket-wheels instead of pulleys.
3.
There's a huge, gold-colored 9mm anti-aircraft shell carried off a battlefield in Europe, a sprocket chain from a bomber that crashed, a pinup-girl playing cards and V-discs with messages to the soldiers from Frank Sinatra and Bing Crosby.
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