AMERICAN CIVIL WAR ARTILLERY PIECES

3-inch Ordnance rifle - The 3-inch Ordnance rifle, Model 1861 was a wrought iron muzzle-loading rifled cannon that was adopted by the United States Army in 1861 and widely used in field artillery units during the American Civil War. It fired a 9.5 lb (4.3 kg) projectile to a distance of 1,830 yd (1,670 m) at an elevation of 5°.

Parrott Rifle - The gun was invented by Captain Robert Parker Parrott, a West Point graduate. He was an American soldier and inventor of military ordnance. He resigned from the service in 1836 and became the superintendent of the West Point Foundry in Cold Spring, New York. He created the first Parrott rifle (and corresponding projectile) in 1860 and patented it in 1861.

Canon-obusier or 12-pounder Napoleon Model 1857 - (literally "Shell-gun cannon", "gun-howitzer") was a type of cannon developed by France in the 1850s. The canon-obusier was a smoothbore cannon using either explosive shells, solid shot, or canister, and was therefore a vast improvement over previous cannon firing only solid shot, such as the Gribeauval system.

M1841 12-pounder howitzer - Is a bronze smoothbore muzzle-loading artillery piece that was adopted by the United States Army in 1841 and employed from the Mexican–American War to the American Civil War. It fired a 8.9 lb (4.0 kg) shell up to a distance of 1,072 yd (980 m) at 5° elevation. It could also fire canister shot and spherical case shot. The howitzer proved effective when employed by light artillery units during the Mexican–American War. The howitzer was used throughout the American Civil War, but it was outclassed by the 12-pounder Napoleon which combined the functions of both field gun and howitzer.

This was made within a day so yeah, its a little bit detail less, but I tweak the muzzle velocities of the individual guns to match their real life counter parts. Anyways Happy holidays!
Cheers!

The 12 pounder howitzer is a little bit broken, it wont elevate, and I can't fix ot without ruining the whole thing up