Baqouba, Iraq ? The U.S. commander of a new offensive north of Baghdad, reclaiming insurgent territory day by day, said Sunday his Iraqi partners may be too weak to hold onto the gains.

The Iraqi military does not even have enough ammunition, said Brig. Gen. Mick Bednarek: “They’re not quite up to the job yet.”

His counterpart south of Baghdad seemed to agree, saying U.S. troops are too few to garrison the districts newly rid of insurgents. “It can’t be coalition (U.S.) forces. We have what we have. There’s got to be more Iraqi security forces,” said Maj. Gen. Rick Lynch.

In the U.S. offensive dubbed Operation Arrowhead Ripper, some 10,000 American troops were in their sixth day of combat to drive Sunni al-Qaida militants from their stronghold in Baqouba, 35 miles northeast of Baghdad.

Bednarek said U.S. forces now control about 60 percent of the city’s west side, but “the challenge now is, how do you hold onto the terrain you’ve cleared? You have to do that shoulder-to-shoulder with Iraqi security forces. And they’re not quite up to the job yet.”

Bednarek predicted it would be weeks before Iraqi police and soldiers could keep al-Qaida out of western Baqouba, and months before they were able to do the same on the city’s east side and outlying villages.

Lynch, commander of the 3rd Infantry Division and of an operation clearing Baghdad’s southern outskirts, was asked whether he thought Iraqi troops would be able to secure his gains.

“There’s not enough of them, there’s not enough of them,” he said. “So I believe the Iraqi government has got to work to create more Iraqi security forces.”