three variations of an unknown patch. What nation are they from and what unit do they represent?

[Mac the Knife]

Here are three variations of an unknown patch. I do not know which country they are from, or what unit they represent. And I do not know if the bullion patches are real or fake. Please forgive me if these are variations of a US patch. Can someone help me identify these?

[Preppy Picker]

US Army Communication Zone Korea.

[Proud Kraut]

Welcome to the WMF! It is indeed an US Army patch: Korean Communications Zone as far as I remember. You will get more informations about it at our sister Forum the US Militaria Forum.

 

P.S.: The bullions look like vintage theater made ones.

[Mac the Knife]

Thanks Proud Kraut! I was afraid of that. The first example looks like a US Patch, should have known. I am happy to be here. It'll take me a white to figure it out. Best!