Campaign Hats or Drill Sgt's Hats made of wool felt are still used by Boy Scouts and other groups. Campaign Hats (also known as Smokey the bear hats) were used by the US military in some form from 1850 to 1939.
Size: 7; 7 1/8; 7 1/4; 7 3/8; 7 1/2; 7 5/8; 7 3/4
Campaign Hat
Sizes:To find the size of your head, take a
tape measure and find the circumference (distance around) your head. What this
is in inches (see below) is your hat size.
We suggest going a little big.