The Tangi Valley traverses the border between Wardak and Logar Province, an area where security has worsened over the past two years, bringing the insurgency closer to the capital, Kabul. It is one of several inaccessible areas that have become havens for insurgents, according to operations and intelligence officers with the Fourth Brigade Combat Team, 10th Mountain Division, which patrols the area. The mountainous region, with its steeply pitched hillsides and arid shale, laced by small footpaths and byways, has long been an area that the Taliban have used to move between Logar and Wardak, local officials said.

Officers at a forward operating base near the valley described Tangi as one of the most troubled areas in Logar and Wardak Provinces. “There’s a lot happening in Tangi,” said Capt. Kirstin Massey, 31, the assistant intelligence officer for Fourth Brigade Combat Team in an interview last week. “It’s a stronghold for the Taliban.”

The fighters are entirely Afghans and almost all local residents, Captain Massey said, noting that “We don’t capture any fighters who are non-Afghans.”

The redoubts in these areas pose the kind of problems the military faced last year in similarly remote areas of Kunar Province, forcing commanders to weigh the mission’s value given the cost in soldiers’ lives and dollars spent in places where the vast majority of the insurgents are local residents who resent both the NATO presence and the Afghan government.

The dilemma is that if NATO military forces do not stay, the areas often quickly slip back under Taliban influence, if not outright control, and the Afghan National Security Forces do not have the ability yet to rout them.

When the Fourth Brigade Combat Team handed over its only combat outpost in the Tangi Valley to Afghan security forces in April, the American commander for the area said that as troops began to withdraw, he wanted to focus his forces on troubled areas that had larger populations. But he pledged that coalition forces would continue to carry out raids there to stem insurgent activity.

Image The attack in Wardak Province killed seven Afghans. Credit... The New York Times

“As we lose U.S. personnel, we have to concentrate on the greater populations,” said Lt. Col. Thomas S. Rickard, the commander of 10th Mountain Division’s Task Force Warrior, which has responsibility for the area that includes Tangi. “We are going to continue to hunt insurgents in Tangi and prevent them from having a safe haven.”