Summary: July 2010 has become the deadliest month of the nearly 9-year-old Afghanistan war for U.S. forces, surpassing the previous record of 60, set in in June 2010. … One-year retrospective: One year ago today, on July 31, 2009 Aubrey Immelman reported that bombs exploded near five Shiite mosques in Baghdad, killing at least 29 people, in an apparent coordinated attack that targeted worshippers leaving Friday prayers.