(Amanda Whitlock, La Salle News Tribune/AP Photo|Marco Garcia/AP Photo)

Congress's sixteen Iraq war veterans are divided in their support of President Obama's plan to arm and train moderate Syrian rebels to fight ISIS.

While the measure to authorize the president's plan, known as Title X, passed in the House on Wednesday, a bipartisan group of nine Iraq war veterans - many with multiple tours of duty to their name - opposed the measure. The remaining seven Iraq veterans voted to authorize the arming of Syrian rebels.

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Here are the words of five veterans from the House floor this week:

Rep. Tulsi Gabbard, D-Hawaii: Opposed

The first-term Democrat served two terms with the Hawaii National Guard, and is one of two Democratic Iraq war veterans in Congress, along with Rep. Tammy Duckworth of Illinois-who also opposed Title X.

On Wednesday, Gabbard said the president's plan was "not a smart or effective strategy" to destroy ISIS, as the rebels could use new weapons and training to target the Assad regime rather than the terrorist group. She said the rebels are too few in number to challenge ISIS, and they are fighting "shoulder-to shoulder" with Al Qaeda fighters in Syria and could change sides.

"We've heard this story before, we know how it ends. Look at Iraq, look at Libya. Clearly our leaders have not learned their lesson," said Gabbard.

Rep. Chris Gibson, R-NY: Opposed

The upstate New York Republican retired as a colonel from the Army after 24 years of service and four combat tours to Iraq. Like Gabbard, he questioned the loyalty of moderate Syrian rebels.

"We have not set conditions for actions in Syria. There is no credible partner there. There is no political partner there, and that's really the issue."

Rep. Duncan Hunter, R-Calif.: Opposed

Hunter called on his experience serving two tours in Iraq with the Marines on the House floor Wednesday, saying "In a confusing situation with many warring factions on all sides, the last thing we should do is arm Islamic rebels to fight other Islamic rebels."

"The Islamic State is on the march and presents a serious threat. We need to kill them, we need to destroy them," he said. "There is no confidence that we are arming the right people and no assurance that those weapons and US tactics … won't fall into the wrong hands."

Rep. Adam Kinzinger, R-Ill.: Supported

After joining the Air Force in 2003, Kinzinger served multiple tours in the Middle East, including Iraq, and currently serves as a pilot in the Air National Guard. He forcefully called out colleagues opposed to authorization on the House floor Wednesday for opposing the commander-in-chief's proposal.

"I reject those calls for a perfect strategy from a perfect president, for a perfect outcome in Syria. That's simply not possible given the circumstances we now face," he said. "What would our enemies and allies think if we rejected the president's authority to do this?"

Rep. Brad Wenstrup, R-Oh.: Supported

The freshman legislator has served in the Army Reserve for sixteen years, and was awarded a Bronze Star during a tour in Iraq as a combat surgeon from 2005-2006. While Wenstrup called for support of the president's plan, he criticized its lack of "decisive force," criticized Obama for not going further.

"We must commit ourselves to do what is necessary," he said. "Not what it takes, but whatever it takes."

It was striking that several Iraq war vets in Congress from both parties rose in opposition to the president's plan on the House floor yesterday. The voice of Rep. Tulsi Gabbard echoed in the chamber as she declared: "It's unrealistic, it will take way to long and the number of fighters trained will be way to small to be truly effective."

The biographical information above was compiled from members' Congressional offices and websites.

ABC's John Parkinson and Jeff Zeleny contributed to this report.