Don't have my models immediately to hand, but I think there should only be two bars.
A solid one to act as spacer for the rear axle and one with a - in it to act as spacer / swivel point for the front...
...and the first unit to be finished in '16 - The 'Grey Dragoons', the Royal Regiment of Dragoons, later to be known as the Scots Greys! Until 1685 their uniform was grey coats and it was this which originally gave rise to the descriptor 'grey', not their horses. I'm quite pleased with the horse-hol...