What I would like to know more about Dragoons is whether they get three shots at the enemy before the need to reload? (at least while mounted)

I am hoping they did their research thoroughly enough to give them a pair of Horse Pistols.

I am also assuming that they fight in melee with swords or sabers rather than having bayonets for their carbines.

Here I am only guessing, but do they fight as skirmishers as I would figure, or in line using standard infantry tactics?