This is an online article of an American Officer who was posted to Marchwood SMC on an exchange program: The duty uniform in the Regiment is Combat 95, the British equivalent of BDUs. If you donât own a Gore-Tex parka, I would recommend getting one as it will be very useful in this climate, and I prefer not to wear British gear unless Iâm in the field. We are authorized to use and wear British field gear, so there is no need to purchase your own American gear. The next most frequently worn uniform is âMess Kit,â or the Army Blue Mess uniform. In my first four months in this assignment, Iâve worn mess dress five times. While it is an optional purchase for a U.S. Army officer, it is mandatory for a British officer. You would look very out of place at many social functions without American âmess dress.â It will be specified in your orders that you must bring it. The Army Green uniform and Army Blue uniform are also necessary, although you will wear those much less frequently, perhaps once or twice a year. From time to time I also have to wear the Class B version of Army Green. Owning the black pullover âwooly pullyâ is also a must in this Regiment. The bottom line on uniforms is make sure you have everything youâre required to own, plus your mess kit and black pullover. Make sure you have a black raincoat and your dress blue hat. Come with a nice civilian wardrobe, as the Brits tend to dress up more than weâre used to. Two conservative suits and a blue blazer is the minimum I would recommend. Jeans or shorts are never acceptable in the officersâ mess or at a Regimental social function unless it is a cook out; the jeans and sneakers look is not widely accepted here. Casual means a proper pair of trousers and a long sleeve collared shirt. I apologize to any female officers reading this, as I recognize that Iâm speaking in terms of menâs clothing, but I think it gives you an idea of the level of dress required.