- For other senses of this word, see Elevation (disambiguation).
In ballistics, the elevation is the angle between the horizontal plane and the direction of the barrel of a gun, mortar or heavy artillery. Originally, elevation was a linear measure of how high the gunners had to physically lift the muzzle of a gun up from the gun carriage to hit targets at a certain distance.
Pre-WWI and WWIEdit
Though firearms were relatively easy to fire back then, artillery was not. Before and during World War I, the only way to effectively fire artillery was plotting points on a plane. Most artillery units seldom employed their cannons in small numbers. Instead of using pin-point artillery firing they used old means of "fire for effect" using artillery en masse. This tactic was employed successfully by past armies.
But changes have been made since past wars and in World War I, artillery was more accurate than before, although not as accurate as modern artillery guns. The tactics of artillery from previous wars were carried on, and still had similar success. Warships and battleships also carried large caliber guns that needed to be elevated to certain degrees to accurately hit targets, and they also had the similar drawbacks of land artillery.
WWII and beyondEdit
As time passed on, more accurate artillery guns were made, and they came in different varieties. Small artillery pieces were used as mortars, medium sized artillery guns became tank guns, and the largest artillery guns became long range land batteries and battleship armaments.
With the introduction of better tanks in World War II, elevation was once again a problem for tank gunners, which had to aim through the Gunner's Auxiliary Sights (GAS) or even through iron sights. Though the problem was not that evident as tanks fired rounds at a higher velocity than normal artillery, making aiming less of a hassle.
As with World War I, World War II artillery was almost like its old counterpart. But in the war came the introduction of the FCS or the fire-control system, which made firing artillery accurately easier.
With the advancements in the 21st century, it has become easy to determine how much elevation a gun needed to hit a target. The laser rangefinder is a modern component of FCS, and can accurately determine the range of the target, thereby calculating how much elevation the gun needs, making modern day guns highly accurate.
- Gunnery Instructions, U.S. Navy (1913), Register No. 4090 
- Gunnery And Explosives For Artillery Officers (1911) 
- Fire Control Fundamentals, NAVPERS 91900 (1953), Part C: The Projectile in Flight - Exterior Ballistics 
- FM 6-40, Tactics, Techniques, and Procedures for Field Artillery Manual Cannon Gunnery (23 April 1996), Chapter 3 - Ballistics; Marine Corps Warfighting Publication No. 3-1.6.19 
- FM 23-91, Mortar Gunnery (1 March 2000), Chapter 2 Fundamentals of Mortar Gunnery 
- Fundamentals of Naval Weapons Systems: Chapter 19 (Weapons and Systems Engineering Department United States Naval Academy) 
- Naval Ordnance and Gunnery (Vol.1 - Naval Ordnance) NAVPERS 10797-A (1957)
- Naval Ordnance and Gunnery (Vol.2 - Fire Control) NAVPERS 10798-A (1957)
- Naval Ordnance and Gunnery 
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