http://i.imgur.com/5wmAuxD.jpgOK that one gets a rec. I was pretty sure I recalled this but looked it up anyway. Tim http://en.wikipedia.org/wiki/British_Heavy_Tanks_of_World_Wa... There was no wireless (radio); communication with command posts was by means of two pigeons, which had their own small exit hatch in the sponsons, or by runners. Because of the noise and vibration, early experiments had shown that radios were impractical, so lamps, flags, semaphore, coloured discs, and the carrier pigeons were part of the standard equipment of the various marks.
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