WEBVTT 00:00.050 --> 00:02.920 July 2 , 2009 , under the cover of 00:02.920 --> 00:04.976 darkness in the heart of the Taliban 00:04.976 --> 00:07.087 insurgency , the Helmand River Valley 00:07.087 --> 00:09.309 became the stage for the largest aerial 00:09.309 --> 00:11.531 insurgen of United States Marines since 00:11.531 --> 00:14.430 the Vietnam War . Its name , Operation 00:14.430 --> 00:16.809 Kangjar , strike of the sword , led by 00:16.809 --> 00:18.976 Brigadier General Lawrence Nicholson , 00:18.976 --> 00:20.809 4000 Marines from the 2nd Marine 00:20.809 --> 00:22.587 Division , a part of 2nd Marine 00:22.587 --> 00:24.753 Expeditionary Brigade , descended into 00:24.753 --> 00:26.698 the dust of southern Afghanistan , 00:26.698 --> 00:28.865 whose mission to reclaim a valley lost 00:28.865 --> 00:31.520 to the enemy for years . The strategy 00:31.520 --> 00:34.340 had 3 key movements . It began with 00:34.340 --> 00:36.284 vertical assaults where helicopter 00:36.284 --> 00:38.849 insurgents bypassed IED riddled roads , 00:39.209 --> 00:41.153 dropping Marines directly into the 00:41.153 --> 00:44.520 districts of Nawa and Garmser . From 00:44.520 --> 00:46.520 there , Marines moved deep into the 00:46.520 --> 00:48.576 green zone , lush farmland where the 00:48.576 --> 00:50.853 Taliban hid among the local population . 00:51.689 --> 00:53.633 But the real shift came when these 00:53.633 --> 00:55.633 Marines didn't just sweep through , 00:55.633 --> 00:57.800 they stayed , building combat outposts 00:57.800 --> 00:59.800 to provide permanent security . The 00:59.800 --> 01:01.967 conditions were brutal . In 110 degree 01:01.967 --> 01:04.189 heat , Marines waded through irrigation 01:04.189 --> 01:06.022 canals and navigated a landscape 01:06.022 --> 01:08.980 saturated with explosives . It was a 01:08.980 --> 01:12.720 battle of endurance . By living 01:12.720 --> 01:14.776 amongst the people and engaging with 01:14.776 --> 01:16.942 local elders , the 2nd Marine Division 01:16.942 --> 01:18.942 began to break the Taliban's grip . 01:19.629 --> 01:21.685 Operation strike of the sword proved 01:21.685 --> 01:23.740 the marines could project power into 01:23.740 --> 01:25.740 the most unreachable corners of the 01:25.740 --> 01:28.669 world . It remains a gold standard for 01:28.669 --> 01:31.059 marine air-ground task force operations .