MARJAH, Afghanistan (AP) - Bombs and booby-traps slowed the advance of thousands of U.S. Marines and Afghan soldiers moving through the Taliban-controlled town of Marjah - NATO's most ambitious effort yet to break the militants' grip over their southern heartland.
NATO said Saturday it hoped to secure the area in days, set up a local government and rush in development aid in a first test of the new U.S. strategy for turning the tide of the eight-year war. The offensive is the largest since the 2001 U.S.-led invasion of Afghanistan.
The Taliban appeared to have scattered in the face of overwhelming force, possibly waiting to regroup and stage attacks later to foil the alliance's plan to stabilize the area and expand Afghan government control in the volatile south.
NATO said two of its soldiers were killed in the first day of the operation - one American and one Briton, according to military officials in their countries. Afghan authorities said at least 20 insurgents were killed.
More than 30 transport helicopters ferried troops into the heart of Marjah before dawn Saturday, while British, Afghan and U.S. troops fanned out across the Nad Ali district to the north of the mud-brick town, long a stronghold of the Taliban.
President Barack Obama was keeping a close watch on combat operations, White House spokesman Tommy Vietor said.
The president will get an update from his national security adviser, Gen. Jim Jones. Vietor said Defense Secretary Robert Gates also will have the top U.S. commander in Afghanistan, Gen. Stanley McChrystal, brief Obama this morning.
Marine commanders had said they expected between 400 and 1,000 insurgents - including more than 100 foreign fighters - to be holed up in Marjah, a town of 80,000 people that is the linchpin of the militants' logistical and opium-smuggling network in the south.
Saturday's ground assault followed several hours after the first wave of helicopters flew troops over the mine fields into the center of town before dawn. Helicopter gunships fired missiles at Taliban tunnels and bunkers while flares illuminated the night sky so pilots could see their landing zones.
The offensive, code-named "Moshtarak," or "Together," was described as the biggest joint operation of the Afghan war, with 15,000 troops involved, including some 7,500 in Marjah itself. The government says Afghan soldiers make up at least half of the offensive's force.
Once Marjah is secured, NATO hopes to quickly deliver aid and provide public services in a bid to win support among the estimated 125,000 people who live in the town and surrounding villages. The Afghans' ability to restore those services is crucial to the success of the operation and in preventing the Taliban from returning.