Rusty's Hat
Was it common to have the brim of a hat pinned up in front like his hat was? Since one reason for wearing a hat was to keep the sun out of one's eyes, this would seem to be counterproductive.
sharehere http://www.old-picture.com/civil-war/Soldier-Boy.htm
is an image from the US Civil War of a boy wearing a similar hat with the brim turned up in front. It reminded me of Rusty's hat when I first saw it.
The link seems to be dead now. Here is another link to an article which includes that photgraph:
https://www.gijobs.com/9-of-the-most-legendary-heroes-in-us-army-history/
And a link to another article with that photo:
https://www.argunners.com/john-l-clem-was-12-years-old-when-he-became-a-civil-war-hero/
Here is a link to an article with a drawing of the model 1872 campaign hat of Captain Frederick Benteen of the 7th US Cavalry:
https://truewestmagazine.com/strange-hats-and-buckskin-coats/
And at least one photo in the article shows several hats worn that way. So that was one possible way to wear a broad brimmed hat in those days and some people did wear them that way.