This type of "canon obusier", commonly called in English the "12-pounder Napoleon Model 1857", was the primary cannon used in the American Civil War.
Over 1,100 such Napoleons were manufactured by the North, and 600 by the South.
At Gettysburg, 142 out of 360 Union guns (36%) were Napoleons.

The "12-pounder Napoleon" was widely admired because of its safety, reliability, and killing power, especially at close range.
It was the last cast bronze gun used by an American army.
The Union version of the Napoleon can be recognized by the flared front end of the barrel, called the muzzle swell.
Confederate Napoleons were produced in at least six variations, most of which had straight muzzles, but at least eight cataloged survivors of 133 identified have muzzle swells.
This type of "canon obusier", commonly called in English the "12-pounder Napoleon Model 1857", was the primary cannon used in the American Civil War. Over 1,100 such Napoleons were manufactured by the North, and 600 by the South. At Gettysburg, 142 out of 360 Union guns (36%) were Napoleons.
The "12-pounder Napoleon" was widely admired because of its safety, reliability, and killing power, especially at close range. It was the last cast bronze gun used by an American army. The Union version of the Napoleon can be recognized by the flared front end of the barrel, called the muzzle swell. Confederate Napoleons were produced in at least six variations, most of which had straight muzzles, but at least eight cataloged survivors of 133 identified have muzzle swells.
Canon obusier de 12