According to the initial reports, a gunbattle occurred between militants and Afghan security forces following two vehicle bombing.
The militants carried out two suicide attacks using two Humvees, armored vehicles stolen from security forces, over an army center in Cheshma area of Maiwand district.
It was the third assault on a security installation this week.
On Tuesday, at least 69 people were killed and scores wounded in Taliban attacks on government compounds in Paktia and Ghazni provinces.
KANDAHAR, Afghanistan - An Afghan Army unit in the south of the country was nearly completely wiped out Thursday, defense officials said, in a Taliban attack that used what is becoming one of the group's deadliest tactics: packing vehicles captured from security forces with explosives and driving them into military and police compounds.
Nine other militants were killed alongside him in the drone strike, the group's spokesman said.
"A spokesman for the Ministry of Defense (MoD) Dawlat Waziri said: "(The base) has been destroyed completely and those who were inside the camp were martyred. "They have burned down everything they found inside".
"We have sent a delegation to assess the situation".
Beleaguered 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.