Infantry- the Backbone of the Union armed with Springfield model 1861

Shapshooters- Elite infantry armed with Sharpe breach loading rifles

Repeater rifled Infantry- Armed with either Spencer or Henry repeater rifle

Cavalry- Armed with Sabre and revolver

Mounted infantry- armed with either Spenser or Henry rifles

Dragoons- Armed with pistols, Sharpe Carbine and sabre

3 Inch Ordinance cannon

parrott gun from 10 to 200 pounder siege artillery

Rodman siege gun

Mortar from Coehorn to 10 inch Mortar

Gatling Guns

(Non Historical unit)

(Feel free to suggest)

Foot Guard Corps- Ronan's Elite guards armed with Sharpe rifles

Old Breed Divison- The Elite of the Elite Armed with sharpe rifles with some are repeater rifles and they are known to be with Ronan during American-Mexican war and they are the most feared unit in the Civil war known for their prowess and discipline

This two units are Ronan's personal army and they are extremely loyal to him

Rangers- an Elite skirmishes light infantry and takes initiative armed with Springfield Model 1863 some Elites would have Sharp Rifle

Mobile Morse telegraph Wagon- a secret wireless morse device that have been secretly commioned by the Bellezas with Samuel Morse agreement it would have been announce to the country if it werent tensions rising between the Free state and slaver state,

This is one of their greatest weapons and no enemy has ever known their existence, as they can use wireless but still have limited range as it was in it's infancy  and can still be used to a nearest wired lines to send message to the capital

This would be one of the reason of Ronan's many success along with those trusted competent generals namely Grant and Sherman and others as they know how to use such units to coordinate their forces much more effective than the confederate and contributed lesser casualties among the union side and logistics are meant

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That's all for now