Two companies from the U.S. Army's 82nd Airborne Division are being deployed to the Mosul to bolster security in Iraq at the request of the top American commander in Baghdad fighting ISIS, a U.S. defense official with knowledge of the order told Fox News.

A U.S. defense official told Fox News the 200 additional troops from the 82nd Airborne Division are going to Mosul—“to provide additional ‘advise and assist’ support to our Iraq Partners as they liberate Mosul,” according to the official.

In another sign the Pentagon is ramping up the fight against ISIS, jets from the aircraft carrier USS George HW Bush began striking ISIS targets on Friday, days after arriving in the Persian Gulf.

Last month, Bush conducted airstrikes in Syria from the Eastern Mediterranean.

US-BACKED FORCES SEIZE SYRIAN AIR BASE FROM ISIS

In recent weeks, multiple press reports said upwards of 1,000 additional American troops would deploy to Kuwait or Syria to act as a "reserve force." These reports were said to be inaccurate by multiple Pentagon officials.

"I don't foresee us bringing in large numbers of coalition troops, mainly because what we're doing is in fact working," said Townsend in a press briefing with Pentagon reporters earlier this month.

IRAQ PM SAYS ISIS WILL BE DEFEATED 'WITHIN WEEKS'

Some of the additional forces from the 82nd Airborne Division will head to the Qayyarah Airfield West, or "Q-West" as the soldiers call it, the official said. U.S. forces have occupied the former Iraqi military base since the summer. Currently, Apache gunships and GPS-guided rocket systems called HIMARS are based there roughly 40 miles south of Mosul to support the ongoing battle for Iraq's second largest city.

In Hamam al-Alil, 15 miles south of Mosul, a U.S. Army artillery battery has also been supporting the Iraqi-led operation into West Mosul in recent months.

The fight against ISIS in Mosul has stretched longer than five months. In an exclusive interview with Chris Wallace on "Fox News Sunday," Iraq Prime Minister Haider al-Abadi predicted ISIS will be defeated in the next few weeks.

"We are defeating them militarily," he said.

On Saturday, the U.S-led coalition acknowledged that its jets had bombed the location where up to 200 civilians were killed in west Mosul last week. The coalition claimed Iraqi forces had requested the airstrike.

In neighboring Syria, a U.S. Marine artillery battery has been supporting a US-led air assault roughly 30 miles west of Raqqa, the de facto ISIS capital, in recent days.

Last week, hundreds of Syrian Arab and Kurdish fighters — accompanied by a handful of U.S. special operations forces — were inserted via U.S. military helicopters outside the city of Tabqa, where a strategic dam has been in ISIS hands since 2014.

Earlier Sunday, the U.S.-backed, Kurdish-led Syrian Democratic Forces (SDF) announced they had captured a strategic airfield in the city, located approximately 30 miles west of Raqqa.