The Iraqi army said Sunday two drones were destroyed above a base housing US troops, one month after the same base was targeted by an armed drone.
The US military's C-RAM defense system was activated to shoot down the drones above the Ain al-Assad base, located in Iraq's western desert, the Iraqi military said.
Several hours earlier a rocket was shot down above Baghdad airport, without causing casualties or damage.
The US consistently blames Iran-linked Iraqi factions for such attacks.
Since the start of this year there have been 39 attacks against US interests in Iraq.
The vast majority have been bombs against logistics convoys, while 14 were rocket attacks, some of them claimed by pro-Iran factions, who aim to pressure Washington into withdrawing all their troops.