Army Class A Dress Coat, 40R Used Sold at Auction: Decorated U.S. Army 155th Support Battalion Warrant Officer Dress Uniform Jacket What's the real reason US Army dress blue pants are a lighter blue than the jacket? I'll give you a hint, it's not because of the cavalry. #armynavyvintage #vintage #history #armyhistory #clothinghistory @ WWII British Army Blue Patrol Jacket Officers Pattern Us Army Dress Blues Jacket Etsy U.S. Army Service Uniform Dress Coat, Men's Enlisted STARS N STRIPES CO.