MP shoulder bands era / unit identification assistance?

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It seems as though MP shoulder bands have caught my interest lately and three have followed me home.
Does anyone have any thoughts on the era or units of these three?

Thanks

Information

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[matthanne1]

Sure- upper left FORSCOM, Forces Command, been around forever (since 1973); era could be 1973 to current; HQ unit located at Ft Bragg.
upper right- 8th Infantry Division (used to be part of USAREUR), tactical version; 8ID was in existence up to 1991 when it was reflagged as 1AD; the tactical/subdued coloring makes it 1968-1991, much more likely the latter part of that time frame.
lower center- USAISC, formed originally in 1968 to test electronic equipment, went through several transformations until it was placed under USACECOM and is known as USAISEC. Now located (again) at Ft Huachuca, Arizona. Of note, when it was first formed at Ft Huachuca, a commander had the patch yellow and white logo placed on teh side of a mountain overlooking the post reservoir using old telephone poles and boulders secured by stakes and cable. Subsequent years of soldiers breaking legs and running across snakes while doing maintenance on the patch caused the reconsideration of the action. By 1981 the patch was falling into disrepair after pulling the stakes, by 1987 you could still tell there was a design up there and could find yellow and white painted rocks, by 1995 you had to know where to look, was just there two weeks ago and the high desert has reclaimed the site. Finally- the armband was likely worn by security at Greeley Hall if note for the base guards as well.

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That is so far in excess of any information I had dared hoped to gather! And on the first reply!
I think fate must have intervened on my behalf.
Thanks for the reply.
Think I will print your reply and store it with the bands.