13 on the blouse, eight on the trousers, which comes to a total of 21 for the set. Assuming you're referring to the Battle Dress Uniform, which is now phased out of Army service (along with the DCU - Desert Combat Uniform), having been first replaced by the Army Combat Uniform, which itself is in the process of being replaced by a similar uniform utilising the Multi-Cam camouflage pattern.
Many Army/Navy stores, including AFMO, carry Marines marpat woodland BDU's.
Propper is a manufacturer of military and tactical clothing among other apparel items. Many of there products are available for purchase online and in Army Navy surplus stores. BDU Pants are one of their products and make up part of the Battle Dress Uniform in combination with a BDU Coat, BDU Hat, T-Shirt, and other necessary accessories.
Many Army/Navy stores, including AFMO, carry BDU's in many camouflage patterns, including Marpat digital woodland.
any required army uniforms are issued by the army but replacements and extras are not
BDU = Battle Dress Uniform
I believe it was for the changing environment from the forest to the deserts over in irag and Afghanistan BDU to DCU
There are many places to buy BDUs. Some include military surplus stores in your area, airsoft or paintball stores, or military surplus stores online. For example: Evike.com .Airsplat.com .bdu.com
if you look closely at the summer bdu's you'll see small square-like patterns. the summer bdu's are lighter and breath more than the winter bdu's
Halfway between the elbow when bent and the shoulder seam of the BDU top.
There are some waterproofed BDU out there but the standard that you would get from a surplus are not. However, I have spent 7 hours in approx. 3 feet of snow in a rain storm wearing nothing but long underwear, BDU, and what I would wear on a normal day and i was just fine.
There are so many buttons in a cockpit, nearly no one knows how much buttons there are. There is like a thousand buttons!
To keep the soldiers from wiping their noses on their sleeves.