Pictured: 20-year-veteran Delta Force sergeant who is America's first casualty of the ISIS ground war and died in raid to rescue hostages from mass execution

  • Veteran Special Forces Master Sergeant Joshua Wheeler, 39, named as casualty
  • He was killed in a raid on an ISIS prison in northern Iraq earlier this week 
  • He had been in the Army for 20 years, and joined the elite Special Forces 10 years ago
  • He had deployed to Iraq and Afghanistan 14 times before he was killed supporting Kurdish troops in  
  • He is the first US soldier killed in Iraq since November 2011 

Casualty: Special Forces Master Sergeant Joshua Wheeler, 39,  was killed in a raid in Iraq this week. He is believed to have been a member of Delta Force

Casualty: Special Forces Master Sergeant Joshua Wheeler, 39,  was killed in a raid in Iraq this week. He is believed to have been a member of Delta Force

The first American soldier to be killed fighting on the ground against ISIS was a twenty-year veteran Special Forces sergeant, it was announced today.

Master Sergeant Joshua Wheeler, 39, was killed during a raid in northern Iraq this week to rescue 69 Iraqis who were about to be executed by ISIS.

MSgt Wheeler is believed to have been a member of the Army's top secret Delta Force, and his unit was supporting Kurdish fighters in the raid on the ISIS stronghold on Hawija. 

Although the US commandos were not initially planning to directly take part in the raid, when the Kurdish fighters got pinned down by ISIS they joined the fight at which point MSgt Wheeler was killed.

He is the first US serviceman to be killed in Iraq since the withdrawal of troops in 2011. 

'They were pinned down and they were beginning to take casualties, so the Americans in the heat of battle made a decision' an Army spokesman said.  

Six ISIS fighters were arrested and more than 20 were reportedly killed in the operation.

MSgt Wheeler joined the Army in 1995 after graduating from Muldrow High School in Muldrow, Oklahoma. He joined the elite Special Operations Command in 2004 and had been deployed to Iraq and Afghanistan 11 times.

Wheeler initially joined as an infantryman with the 24th Infantry Regiment, he transferred to the Army Rangers in 1997 where he completed three deployments before joining Delta Force and deploying to Iraq and Afghanistan 11 another times.

The raid in which he was killed was the most significant against Islamic State since May, when American special operations forces killed one of its senior leaders, Abu Sayyaf from Tunisia, in a raid in Syria. 

The hostages rescued in the raid were all Arabs, including local residents and Islamic State fighters held as suspected spies, a U.S. official said.

Scroll down for video 

ISIS territory: The raid was launched just east of the ISIS stronghold of Hawija, in northern Iraq, in the largely Kurdish region of Kirkuk

ISIS territory: The raid was launched just east of the ISIS stronghold of Hawija, in northern Iraq, in the largely Kurdish region of Kirkuk

The official told Reuters that around 20 of the hostages were members of Iraqi security forces.

'Some of the remainder were Daesh (Islamic State) ... fighters that Daesh thought were spies," the official said. "The rest of them were citizens of the local town'.

U.S. Army Colonel Steve Warren, spokesman for U.S.-led coalition in Iraq, said the possibility that Americans were among the hostages was not a consideration in carrying out the operation.

Some of the rescued people said Islamic State militants had told them they would be executed after morning prayers, Warren said.

The U.S. forces were acting as advisors then were sucked into the battle when Kurdish fighters came under heavy fire, he explained.

"They were pinned down and they were beginning to take casualties, so the Americans in the heat of battle made a decision," he said.

Air strikes were launched before and after the mission to block approaches to the prison and destroy it afterward, the U.S. defense official said.

Hawija is a stronghold of Islamic State militants who have captured several dozen Kurdish peshmerga fighters in battle.

Islamic State, also known as ISIS, has been for more than a year the target of daily air strikes in Iraq and Syria by a U.S.-led coalition.  

Combat: Four Peshmerga soldiers - the Kurdish region's organised militia - were also wounded in the raid (Pictured, Kurdish peshmerga fighters take positions on the front line against ISIS militants in northern Iraq, file image)

Combat: Four Peshmerga soldiers - the Kurdish region's organised militia - were also wounded in the raid (Pictured, Kurdish peshmerga fighters take positions on the front line against ISIS militants in northern Iraq, file image)

 

The comments below have not been moderated.

The views expressed in the contents above are those of our users and do not necessarily reflect the views of MailOnline.

By posting your comment you agree to our house rules.

Who is this week's top commenter? Find out now