We've had discussions in the past about shoulder patches, etc. 

Had to update this post since the last links I provided years ago, are no longer viable.

https://wardogmilitaria.com/index.php?main_page=index&cPath=61

Home page for their site is: https://wardogmilitaria.com/index.php?main_page=index

and you can find all sorts of interesting tidbits.

Here is something that I didn't see in those sites, the new (even newer than the blue-gray digi patterned ACUs) cammo uniform - the Multicam pattern.

I guess someone realized that instead of blending in in every situation, the ACU blended in to almost nothing. Here are some sites with info on it:

http://defense-update.com/features/2010/fe..._19022010.html#

http://www.redbullrising.com/2010/02/corre...-not-ucp-d.html

Here is a comparison of the patterns from one of those sites:

Thanks for that. It's great when we all pitch in.