Insurgents are increasing the use of booby-trapped houses to attack U.S. troops, who are quickly adjusting their tactics to avoid getting caught in a deadly snare.
Six soldiers were killed and four injured Jan. 9 in Diyala province when the house they were searching exploded and came down upon them.
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Hertling said insurgents use different tactics to build what the Army calls house-borne improvised explosive devices, or HBIEDs.
In Diyala, Hertling said, they have found at least six HBIEDs.
http://www.armytimes.com/news/2008/01/army_up_offensive_080121w/