Answer Bearskin Cap - similar to what the Palace Guards wear at Buckingham Palace Busby - A shorter version with a flat top. Worn mostly by Hussar units. Still worn by German cavalry in WW1. Shako - Cylindrical hat made of leather in various patterns. Some were smaller at the bottom and larger diameter at the top. Some worn during Napoleonic Wars were very tall.
K-Bar
Cap trick A hat trick.
Reveille
It means a tuque. In Canada, a tuque is what we call a wool hat.
They are a sun hat appropriate for a sunny climate. They were adopted by troops of the Australian Colonies and carried on into the Commonwealth Military Forces.
A chef
I suspect what you're referring to is a Top Hat. The tall black hats that gentlemen wear to formal occasions.
A military hat is called a cover because it literally covers and protects your head. It's simply just a more formal term for a hat. (i.e. guns vs weapons, bathrooms vs latrines, etc.)
Lincoln's hat was 12" tall or one foot tall.
I would call it a hard hat
As tall as anyone's hat can be, And 10 times taller than you or me.
The Bowler and the Derby is the same hat. The British call the hat a Bowler. The Americans call the hat a Derby.
His tall black hat
Flat hat
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1foot
A Panama hat.