Smoke billows from a 500-pound bomb dropped during the intense battle for the city of Shewan. During the battle, Marine snipers attached to Task Force 2d Battalion, 7th Marine Regiment, Special Purpose Marine Air Ground Task Force Afghanistan, killed more than 50 insurgents and wounded several more. - Smoke billows from a 500-pound bomb dropped during the intense battle for the city of Shewan. During the battle, Marine snipers attached to Task Force 2d Battalion, 7th Marine Regiment, Special Purpose Marine Air Ground Task Force Afghanistan, killed more than 50 insurgents and wounded several more.