Reverse image search, anon.
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https://twitter.com/usarmycentral/status/1056984765507792899
10/29/2018
US Army Central
@usarmycentral
#DidYouKnow - The arrow on the patch worn by
@1stTSC
Soldiers points to what would be 10:30 on a clock, signifying that the mission is always accomplished before the eleventh hour. #100DaysofHonor