What is this patch please

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What is this patch please, it looks familiar as I we've seen it posted here and there over the years in the patch and in the uniform forums, but never really paid attention to it's title.

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This guy by the way is someone who was in the same company as me at Basic and AIT in early 1980 LOL, we reconnected on FBs's group,  Fort Benning Georgia Home of the Infantry.

 

A M/Sgt, he obviously went the distance.

[BePhreed]

Combined Forces Command - Afghanistan.

 

ETA: https://commanderschallenge.wordpress.com/2013/07/01/combined-forces-command-afghanistan-challenge-coin-circa-2003-2007/ is an article that briefly describes their mission. 

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Thank you BePhreed