August 2011 has been the deadliest month for US forces in Afghanistan since the conflict began nearly ten years ago, according to a report. According to a tally by, 66 US service members were killed this month. 30 US troops, mostly Navy Seal special forces, died when their helicopter was shot down by Taliban on August 6, marking the single largest loss of US life in the war, the BBC reports. The report also showed that 306 US troops died in Afghanistan, in the first eight months of this year. That is down about five percent from the first eight months of 2010, when 321 US troops were killed. This year 10,000 troops are to be withdrawn from Afghanistan, with another 23,000 pulled out in 2012. The move will leave nearly 68,000 US troops in the war-torn country.