This is from the draft of my memoirs - Son of a Sharecropper.
Coming from the 199th Light Infantry Brigade, I was a bit of an oddity at IIFFV. There weren't that many of us from line units. I remember one morning formation (Yeah - I had to start going to morning formations) the 1st Sgt was reiterating that IIFFV personnel were required to wear baseball caps. Boonie hats were unauthorized attire.
One guy pointed at me in my boonie hat and said "what about him." The 1st Sgt said "You see that patch on his right shoulder - that's an infantry unit. He can wear a bonnie hat here if he wants to." From that day, I wore my boonie hat with a bit more pride.