My choice would be Horse Artillery or in particular Ramseys H Troop, British Royal Horse Artillery



Available towards the end of the game Horse Artillery would be able to provide a highly mobile close fire support to infantry and cavalry alike. No longer limited to placing artillery to the rear the general will be able to move these units to where they are needed then scoot them out before the enemy can engage them in melee.

The mobility and firepower offered by these units is a forerunner of the modern tank and self propelled gun. Its introduction offers a change of tactics, an interruption of the trinity between cavalry, infantry and artillery. Infantry form square to defeat cavalry and line to lessen the impact of artillery. By accompanying the cavalry into battle the Horse Artillery are able to inflict substantial damage on the infantry squares.

The Royal Horse Artillery are the elite units of the British Royal Artillery. Each Troop consists of three, two gun Divisions. Each single gun, sub division had a six pounder gun and livery pulled by a team of horses, ridden into the fray by the gun crew. Uniformed and armed as light cavalry the gun crew where expected race into position, wheel about and have the gun ready to fire shot or canister in under a minute.

Despite being at the sharp pointy end of the battle not one gun was lost by the Royal Horse Artillery to the French during the entire Peninsular Campaign. During the battle of Fuentes de Onoro the 7th Infantry Division were rescued from over whelming French cavalry by the Light Division and the Royal Horse Artillery. During the exchange Ramsey's two gun division became surrounded by the French cavalry. Rather than surrender their guns they mounted up, drew saber and fought through their way back to the British lines.

It could not be said that the Royal Horse Artillary unit type was unique, the Prussians were the first to adopt this unit and the French horse artillary far out numbered the British. However their versatility, penash and battle honors make them my favorites for the above title.