Help identifying this hat and symbol?

[Blink]

A photo of my great grandfather who was a WW2 vet. Not sure if this hat is military or not though. Any help would be great!

 

[MagsRags]

It reminds me of some versions of the Knights Templar cross. Was your GGF a Catholic? Did he belong to any fraternal orders?

 

[Blink]

It reminds me of some versions of the Knights Templar cross. Was your GGF a Catholic? Did he belong to any fraternal orders?

Yes he was Catholic, but I’m not sure about fraternal orders. That’s what I’m trying to find out