Help identifying some shoulder boards

[Richardxyz]

I have to confess that insignia is not an area I have much knowledge in. I picked up these items along the way when purchasing other items. I would really appreciate any identification.

[Richardxyz]

Some more...

[Chip M]

The first two are WWII era straps. You could get a description if you posted them in the WWII section. The third one is European, possibly Belgian.

Chip

[Richardxyz]

Chip,
Thanks for your help, I've had my eyes closed to insignia for years and it shows!