Operation Volcano, part of Operation Achilles, saw British Royal Marines clear a Taliban base, consisting of 25 compounds, near the Kajaki hydroelectric dam. The Royal Marines received heavy fire from Taliban
assault rifles,
machine guns and
rocket-propelled grenades. The Royal Marines systematically cleared the compounds and buildings, backed up by mortars and air support. On April 3,
United States and Afghan forces raided a compound in the
Helmand province, after getting a tip-off that a junior Taliban commander was hiding there. Indeed, Taliban forces were present. Heavy fighting broke out, which left at least 10
Taliban dead and two captured. The coalition had no casualties. The fate of the junior commander remains unknown. On April 30, 1,000 ISAF troops, alongside Afghan National Army ground forces, pushed northwards through the Sangin Valley driving the Taliban from Gereshk and the surrounding villages. It was reported that coalition troops killed more than 130 Taliban fighters, but thousands of Afghans staged a protest saying the victims were civilians. Backed by air support, the Taliban fighters were killed in two separate battles in the western province of Herat, according to a US military statement. As part of the operation, British Royal Engineers built company sized patrol bases for the Afghan National Security Forces. The deaths triggered an angry protest - the second in the country in two days - over what local villagers claimed was the killing of civilians. Herat, bordering Iran, had been relatively safe until recently compared with the south and east where the Taliban are most active. Both battles were in the Zerkoh valley, south of Shindand district, where Western troops have a large base, and running into Farah province further south. A total of 87 Taliban fighters were killed during a 14-hour battle with US-led troops and Afghan forces on Sunday. Another 49 Taliban, including two of their leaders, were killed two days earlier after a group of Taliban fired at a joint coalition and Afghan patrol in another part of the valley. However, local officials said that up to 51 civilians, including women and children, were among the dead. ==February–May timeline==