Dec. 15 (UPI) -- The U.S. Army on Monday identified two Iowa National Guard soldiers killed in an ambush by a lone gunman in Syria.

Sgt. Edgar Brian Torres-Tovar, 25, of Des Moines, and Sgt. William Nathaniel Howard, 29, of Marshalltown, died Saturday in Palmyra of injuries sustained while engaged with hostile forces, the Army said.

They were supporting Operation Inherent Resolve in support of ongoing counter-ISIS and counterterrorism efforts in the region.

They were assigned to the 1st Squadron, 113th Cavalry Regiment, 2nd Infantry Brigade Combat Team, 34th Infantry Division of the Iowa National Guard in Boone.

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