Print published in France in 1803 showing methods

Print published in France in 1803 showing methods of invading England by air, sea, and tunnel. At the left by the harbour, and on the hill overlooking it, are Chappe telegraph towers. French troops are passing through a tunnel under the English Channel. Above them rowing boats full of French troopas are approaching England while, in the air, a fleet of balloons is transporting more troops

1803 Approaching Chappe Invading Methods Optical Overlooking Semaphore Transporting

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