Muskets were the cutting edge of military design. Their matchlocks and flintlocks were the precursor to modern rifles.
These were still early versions of these weapons and some wouldn’t be able to fire in the rain due to the black-powder getting damp. Although slow-loading, a veteran musketeer was expected to fire two rounds per minute.
When engaged at close quarters, musketeers would draw swords or ‘club’ their muskets (use the wooden stock as a cudgel).
Musketeering today is a very rewarding, if technical, role on the field.