What guns were used in the Battle of Monmouth?

Answer 1

Not an expert here, but I believe the matchlock was in general use at the time of this battle. The wheellock was better but too expensive to equip an army. Only generals, princes, and really rich guys could afford them, and the flintlock was not invented yet.

Correction to above:

If you are asking about the Battle of Monmouth Courthouse (June 1778) during the American Revolution, the standard infantry weapon was the muzzle-loading flintlock musket with socket bayonet (which had been standard issue since the early 1700's). The British used the Short-land pattern, known as the Brown Bess. Americans tended to use whatever they could get their hands on, to include captured Brown Bess's and French Charleville pattern muskets.