On Monday, eight Afghan police officers forces were killed when Taliban fighters attacked a security post in the capital city of the western province of Farah.
At least 40 Taliban killed and 35 others were wounded in a Taliban group attack on Monday night in Kandahar province, local officials said Tuesday.
"I can confirm that last night the Taliban launched a wave of attacks on police checkpoints in Maiwand and Zhari districts and we lost 22 courageous policemen", Kandahar governor spokesman Qudrat Khushbakht told AFP.
USA troops are in Afghanistan on a dual mission of training, advising and assisting Afghan forces in their fight against the Taliban and conducting counterterrorism operations against groups such as al Qaeda and the Islamic State in Iraq and Syria (ISIS). He said 15 Taliban were killed.
Kandahar police said the attack was one of the biggest attacks by the Taliban in the last few years.
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A vehicle-borne improvised explosive device left four United States soldiers wounded in Afghanistan.
The Taliban told reporters they killed 43 policemen and members of a militia and destroyed 13 armoured vehicles.
Afghan security forces have faced soaring casualties in their attempts to hold back the insurgents since North Atlantic Treaty Organisation combat forces pulled out of the country at the end of 2014.
"Our forces resisted until they received reinforcements and air support", Zia Durrani said.