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Summary
| Description |
English: Plan and elevation of two early types of polygonal fort at Cologne, built in 1817 and 1824 in the Prussian System of military engineering. From a British textbook published in 1892. |
| Date | |
| Source |
Text Book of Fortification and Military Engineering: Part II, HMSO, London 1893 (Opposite p. 145) https://babel.hathitrust.org/cgi/pt?id=njp.32101075691319;view=2up;seq=246 |
| Author | Anonymous |
Licensing
|
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
 Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings. |
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 17:27, 2 January 2018 | | 779 × 496 (214 KB) | Alansplodge | User created page with UploadWizard |
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