2ndDEboy,
Sorry I was artillery and CSA/USA. However, check the ads for "gently" used duds here. When we stated in 2011 we made a trip to G'burg with friends who were in the unit and got our duds there. Where u don't want to scrimp is your footwear. Buy quality and/or best insoles. Also see if the unit go strictly authentic and for Union I would assume so. Make sure you get a good canteen and extra corks for the stopper. A good blanket is a good investment.
Have fun! I did for three years.
OTC
Spotsy