Afghan Roadside Bombs Killing More U.S. Troops

Sgt. Darryl McInstry, right, an Army medic, leads Marines as they carry a Marine wounded by an improvised explosive device to a waiting medevac helicopter in Helmand Province, Afghanistan, Jan. 26, 2011. AP Photo

KABUL - Roadside bombs killed 268 American troops in Afghanistan last year, a 60 percent increase over the previous year even as the Pentagon employs new measures to counter the Taliban's makeshift weapon of choice.

The number of U.S. troops wounded by what the military terms improvised explosive devices also soared, according to U.S. defense figures obtained Wednesday.

There were 3,366 U.S. service members injured in IED blasts -- up 178 percent from the 1,211 hurt by the militants' crudely made bombs in 2009, the figures showed.

Defense officials attributed the rise in casualties to the surge in U.S. forces in Afghanistan last year. Fighting has increased, especially in southern and eastern Afghanistan, as coalition forces work to weaken the Taliban in their strongholds and keep them from returning in force this spring.

The Pentagon's Joint Improvised Explosive Device Defeat Organization, based outside Washington, D.C., said not all the year-end statistics were gloomy.

During heavy fighting in June and July, 35 percent of the bomb blasts killed or wounded U.S. troops. That percentage fell to 26 percent in December despite ongoing violence and a high volume of IED attacks.

Since the U.S.-led invasion in October 2001, 619 U.S. troops have been killed and another 5,764 have been wounded in roadside bomb attacks in Afghanistan, according to the Pentagon figures.

Overall, at least 1,370 U.S. troops have been killed in Afghanistan since the war began. Last year was by far the deadliest for all foreign troops, including Americans, with 702 killed, eclipsing the 2009 record of 504.

Army Lt. Gen. Michael L. Oates, director of the organization, has said that additional explosive sensors, bomb analysts and specially trained dogs have helped battle the roadside bombs. He says that despite a rising number of incidents linked to the buildup in U.S. forces in Afghanistan, he believes the Pentagon is making progress in the fight against IEDs.

During a trip to Afghanistan in July, U.S. Undersecretary of Defense Ashton Carter said Washington was spending $3 billion on equipment to combat the threat of roadside bombs. Last year, for instance, the Pentagon provided $495 million to buy 34 tethered surveillance blimps that give troops a bird's eye view of certain areas and sent in more unmanned surveillance aircraft so route-clearance patrols would have the benefit of full-motion video.

The Pentagon also delivered more than 5,000 hand-held bomb detectors, improved training and sent additional equipment to Afghanistan to counter the threat.

While the surge in IED attacks in Afghanistan alarms officials, the volume is still roughly a third of those reported at the height of the Iraq war. The bombs are also remarkably less sophisticated, officials say, typically relying on fertilizer and diesel fuel.

Still, the bombs made by militants in Afghanistan present different challenges. Unlike in Iraq, where electronics could be used to scan for remote-controlled bombs and jam their frequencies, Afghan bombs lack the circuitry that make them easy to detect and thwart.

  • CBSNews.com wire services

    CBSNews.com wire services

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