The Pentagon said on Jan. 24 that 34 service members had been diagnosed with traumatic brain injury following missile strikes by Iran on a base in Iraq earlier this month, a number higher than the military had previously announced.
President Donald Trump and other top officials initially said Iran's attack had not killed or injured any U.S. service members.
Four members of Iraq's military were wounded on Jan. 12 in a rocket attack targeting an airbase just north of Baghdad where American trainers were present until recently, Iraqi security officials said.
The attack by at least six rockets came just days after Iran fired ballistic missiles at two bases in Iraq that house U.S. forces, causing no casualties.
Two rockets hit near the U.S. embassy in Iraq's capital on Jan. 5, witnesses told AFP, hours after the ambassador was summoned over a U.S. strike that killed top Iraqi and Iranian commanders.
Jan. 5's attack was the second night in a row that the Green Zone was hit and the 14th time over the last two months that U.S. installations have been targeted.