Looks about right. I realized one time when I was packing for a month long field exercise that the US Army has too many damn types of headwear. This was several years back, so in terms of headwear I managed to pack the following:
1) Patrol cap (square, baseball looking camo hat for field wear)
2) Beret (thank God that's pretty much gone finally)
3) Black watch cap (still the standard at that point for PT uniform)
4) Gray/green fleece cap (the new standard for cold weather wear in fatigues)
5) Combat helmet (AKA ACH for non armored vehicle wear)
6) Crewman's vehicle helmet (AKA CVC for wear inside our M1117 armored security vehicles)
Yes, I packed every one of them and had to wear every single one at least once during the exercise.