Howitzer
Overview
 
A howitzer is a type of artillery
Artillery
Originally applied to any group of infantry primarily armed with projectile weapons, artillery has over time become limited in meaning to refer only to those engines of war that operate by projection of munitions far beyond the range of effect of personal weapons...

 piece characterized by a relatively short barrel and the use of comparatively small propellant charges to propel projectiles at relatively high trajectories, with a steep angle of descent. Until fairly recently, about the end of the Second World War, such weapons were characterized by a barrel length 15 to 25 times the caliber
Caliber
In guns including firearms, caliber or calibre is the approximate internal diameter of the barrel in relation to the diameter of the projectile used in it....

 of the gun.

In the taxonomies of artillery pieces used by European (and European-style) armies in the eighteenth, 19th, and 20th centuries, the howitzer stood between the "gun
Artillery
Originally applied to any group of infantry primarily armed with projectile weapons, artillery has over time become limited in meaning to refer only to those engines of war that operate by projection of munitions far beyond the range of effect of personal weapons...

" (characterized by a longer barrel, larger propelling charges, smaller shells, higher velocities, and flatter trajectories) and the "mortar
Mortar (weapon)
A mortar is an indirect fire weapon that fires explosive projectiles known as bombs at low velocities, short ranges, and high-arcing ballistic trajectories. It is typically muzzle-loading and has a barrel length less than 15 times its caliber....

" (which was meant to fire at even higher angles of ascent and descent).
 
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