Supposedly the heraldic description...
Secondary source. Still trying to confirm.
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The Army’s patch features crossed scimitars, a palm wreath and stars. The scimitars, short swords with curved blades, are meant to symbolize the twin goals of the U.S.-led coalition: to defeat the Islamic State, also referred to as ISIL, and to restore stability in the region, according to Army documents.
The palm wreath is symbol of honor. While the stars and the buff-and-blue colors on the patch indicate the three-star command and the land, air and sea forces involved in the fight.
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So, yes. Scimitars. 3 stars for the command echelon still sounds weird to me.
The Army’s patch for Operation Inherent Resolve can be found at:
http://www.businessinsider.com/armys-shoulder-patch-for-the-war-against-isis-2015-9
The patch features crossed scimitars, three stars, and a palm wreath. According to USA Today, the three stars denote the US land, air, and sea forces involved in the fight against ISIS.
The palm wreath is meant to symbolize honor, while the crossed swords evoke the twin goals of the ongoing operations: the defeat of ISIS and the restoration of stability in the region.