KABUL (AFP/Reuters) - Four foreign soldiers and dozens of Afghans, mostly Taliban, have been killed in two days of violence across insurgency-hit Afghanistan, authorities said Saturday. One soldier serving with the US-led coalition was killed in an insurgent attack in eastern Afghanistan on Saturday. A coalition service member was killed during an attack on a convoy in eastern Afghanistan... today, the coalition said in a statement, without giving further details including the exact location of the incident. The British Defence Ministry said one of its soldiers with the separate Nato-led International Security Assistance Force (Isaf) was killed in an explosion Friday while on patrol near the town of Lashkar Gah in the southern province of Helmand. Afghan authorities meanwhile reported that six civilians and dozens of insurgents were killed in other violence across the country, highlighting the threat the country faces as it prepares for presidential polls in August. In an attack late Friday, a roadside bomb tore through a car in the western province of Herat, killing six members of a family, the provincial government said. Meanwhile, authorities in southern Afghanistan said 33 Taliban were killed in an airstrike and other operations in insurgency-hit Helmand. Twenty-six Taliban were killed in an airstrike conducted by foreign forces near Lashkar Gah late Friday, Daud Ahmadi, a spokesman for the local administration there, told AFP. General Sher Mohammad Zazai, the commander of the Afghan army for southern Afghanistan, said seven other insurgents were killed elsewhere in Helmand the same day. Meanwhile, the US will order all its troops in Afghanistan to undergo new training after concluding that pilots violated orders in airstrikes last month that it accepts may have killed as many as 86 civilians. In a long-awaited report, released six weeks after US B1 bombers killed large numbers of civilians unleashing fury among Afghans, the Pentagon acknowledged that rules had not been followed, although it said the mistakes fell short of breaking the law. The bombings took place on May 4 in western Afghanistan after a day-long battle that saw Afghan security forces ambushed by Taliban fighters and US Marines come to their aid. The report said pilots broke guidelines by striking without checking whether civilians were in the buildings. The strikes, while complying with the (laws of armed conflict) did not adhere to all of the specific guidance and Commanders Intent contained in the controlling directive, it said. Not applying all of that guidance likely resulted in civilian casualties. While the report noted that US investigators had concluded that about 26 civilians and about 76 fighters had died, it acknowledged the figures were imprecise and said the true civilian death toll would never be known. But in the militarys first public acknowledgement of Afghan accounts of much larger civilian tolls, the report noted that an Afghan human rights agency had concluded that 86 civilians had died and praised its findings as balanced and thorough. The report, released by Central Command responsible for the wars in both Afghanistan and Iraq, said the military needed to refine its rules for using weapons in Afghanistan, which should be published in new stand-alone documents.