Taliban militants ambushed two Afghan army convoys in the countryÂ’s south, sparking gunfights that killed 25 militants, five Afghan soldiers and a civilian, the Afghan military said on Saturday. About 50 Afghan soldiers were reported trapped in a Taliban-held territory after militants ambushed a military convey of around 20 vehicles. Fighting also erupted between the insurgents and US forces in the south and an American soldier was killed and six others wounded, the US military said. The latest bloodletting comes just days after a 24-hour storm of violence across Afghanistan that killed some 120 people. The fiercest fighting was in Helmand province. It erupted late on Friday and six militants and an Afghan soldier were killed, said Gen Rehmatullah Raufi, the head of the Afghan militaryÂ’s southern region. It continued into Saturday morning with militants ambushing a large army convoy, setting off a gunfight that left 15 Taliban and four Afghan soldiers dead, said an army commander. The 20-vehicle Afghan army convoy was attacked after leaving the scene of a battle late Friday in which one soldier and six Taliban were killed, a general said. Only six vehicles had managed to escape, leaving behind the remainder and about 50 men, an army officer said. The men were cut off from the main unit and their fate was not known, he said. An explosion ripped through a vehicle carrying former warlord Amanullah Khan in Herat, wounding him. Two French commandos were killed on Saturday in combat in Afghanistan, a French military source said.