[103] By October 2017, around the time of IS's territorial defeat in Iraq, CJTF-OIR claimed that around 80,000 IS militants had been killed by it and its allies (excluding those targeted by Russian and Syrian Air Force strikes).

It also symbolizes the willingness and dedication of coalition members to work closely with our friends in the region and apply all available dimensions of national power necessary—diplomatic, informational, military, economic—to degrade and ultimately destroy ISIL.

The experiment ended satisfactorily, but a US Air Force spokesman stated it remains unlikely they will invest in reactivating the OV-10 on a regular basis because of the overhead cost of operating an additional aircraft type.

[123][124] By 9 March 2016, nearly 11,000 airstrikes had been launched on IS (and occasionally Al-Nusra), killing over 27,000 fighters[125] and striking over 22,000 targets, including 139 tanks, 371 Humvees, and 1,216 pieces of oil infrastructure.

Approximately 80% of these airstrikes have been conducted by American forces, with the remaining 20% being launched by other members of the coalition, such as the United Kingdom and Australia.

[131] On 15 December 2016, the U.K. Defense Secretary Michael Fallon said that "more than 25,000 Daesh fighters have now been killed," a number that was half of the United States' estimate.

[135][136] In September 2017, the US Africa Command announced that 495 precision airstrikes were carried out and 800 to 900 IS fighters were killed during the operation in Sirte between 1 August and 19 December 2016.

According to the Syrian Observatory for Human Rights, Coalition airstrikes have killed 7,043 people across Syria, of which: 5,768 dead were IS fighters, 304 Al-Nusra Front militants and other rebels, 90 government soldiers and 881 civilians.

In May 2016, the brigade deployed to advise and assist, train and equip Iraqi security forces to fight the Islamic State of Iraq.

The 2nd Brigade also conducted precision surface-to-surface fires and supported a multitude of intelligence and logistical operations for coalition and Iraqi forces.

The Brigade also aided in the clearance of IS from Fallujah, the near elimination of suicide attacks in Baghdad, and the introduction of improved tactics that liberated more than 100 towns and villages.

[143] In early 2019, the US-led coalition focused on the final assault on ISIS in the Euphrates pocket, including the Battle of Baghuz Fawqani in the first quarter of the year.

[146] CJTF-OIR paused all training and anti-ISIS operations on 5 January 2020, to focus on protecting Iraqi bases hosting Coalition troops in the wake of several rocket attacks.

[147] This action was also linked to the anticipated response against Coalition forces in the wake of the killing of Iranian General Qasem Soleimani.

[150] On 3 April, U.S. forces killed senior Islamic State leader Khalid 'Aydd Ahmad al-Jabouri, who was allegedly planning attacks in Europe during Easter, in an overnight drone strike on the outskirts of rebel-held town of Killi, Idlib in northwest Syria.

[161] On January 9, the Islamic State, in the 477th issue of its weekly newsletter "Al-Naba", praised the attack and Jabbar himself, calling on other supporters to follow in his footsteps.

[184] In addition, 200 U.S. soldiers would remain in eastern Syria near the oil fields, to prevent the Islamic State, Syrian government and Russian forces from advancing in the region.

[187] In July 2020, the U.S. military built a new base including an airport, located between Um Kahif village and Tal Alu silos near Al-Yaarubiyah.

[144] In 2019, the casualties were concentrated in the first quarter during the Battle of Baghuz Fawqani including an alleged massacre of civilian human shields on 19 March.

[193][194][195] The New York Times reported that efforts to minimize and count civilian deaths fell far short of the approach promised by the US military for its use of airstrikes in the war against IS.

The newspaper reported that airstrikes against IS, as well as in the war in Afghanistan, was marked by "flawed intelligence, poor targeting and thousands of civilian deaths."

[199] In one particular strike, the March 2019 Baghuz airstrike, approximately 50 women and children were killed, and the Air Force subsequently covered the deaths up.