Stockades were also placed behind the parapets of the covered ways of permanent fortifications but these are seldom seen on old forts now because of rot. Even in the old days such palisades were often only erected in wartime. The last time I visited Fort Ticonderoga and the reconstruction of Fort Stanwix (below), both in New York state, they had palisaded covered ways.
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The tips of the palisade can be seen in this photo of Fort Stanwix. Note how the glacis covers the lower part of the wall from cannon fire.
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