Since I do civil war reenacting, keeping brass polished is a must. If you look at a uniform you will find all the buttons, belt buckle, closures, cartrige box US emblem, cartridge box belt emblem, hat buttons and the ever present hat brass, and last but not least the brass furniture on a 1853 Enfield rifled musket. Do it the period way wood ashes. So having down time for the winter is good gives you 3 months to polish all that brass.
Or you can get a can of Neverdull and polish to a bright shine, which you just touch up once or twice a season.