1800's Cannon.

The Columbiad was a large caliber, muzzle loading cannon able to fire heavy projectiles at high and low trajectories. This characteristic enabled the columbiad to fire solid shot or shell long ranges which made it an protective seacoast defense weapon for its day. Invented by Colonel George Bomford, United States Army, in 1811, columbiads were used by the United States coastal artillery from the War of 1812 until the early years of the 20th Century. Not many columbiads were used outside of the U.S. Army.

1900's Cannon.

A howitzer is a classification of artillery piece that is characterized by a relatively short barrel and the use of comparatively small explosive charges to through projectiles at trajectories with a steep angle of descent. In the taxonomies of artillery pieces used by European armies in the 18th, 19th, and 20th centuries, the howitzer stood between the "gun" which was characterized by a longer barrel, larger propelling charges, smaller shells, higher velocities and flatter trajectories. The very first howitzer was made in sweden toward the end of the seventeenth century