Jefferson disk [SEP] named after
Jefferson disk
The Jefferson disk, or wheel cypher as Thomas Jefferson named it, also known as the Bazeries Cylinder, is a cipher system using a set of wheels or disks, each with the 26 letters of the alphabet arranged around their edge. The order of the letters is different for each disk and is usually scrambled in some random way. Each disk is marked with a unique number. A hole in the centre of the disks allows them to be stacked on an axle. The disks are removable and can be
Vera Cruz, Mar. 9‑29, 1847
- Battle of Cerro Gordo, Apr. 17‑18, 1847
- Skirmish of Ocalaca, Aug. 16, 1847
- Battle of Contreras, Aug. 19‑20, 1847
- Battle of Churubusco, Aug. 20, 1847
- Storming of Chapultepec, Sep. 13, 1847
- Assault and Capture of the City of Mexico, Sep. 13‑14, 1847
After the War with Mexico was concluded he was in garrison at Jefferson Barracks, Mo., 1848‑49; on frontier duty, on march to