Syrian rebels said they captured a large special forces base on a main road between the city of Aleppo and the Turkish border on Sunday.
No independent verification of the rebels' statement was immediately available.
At least 18 troops loyal to President Bashar al-Assad were taken prisoner, opposition campaigners said.
A statement by the Aleppo Media Centre said at least 15 tanks were seized and that officers were among loyalist forces captured.
Mohammad Abdallah, an opposition campaigner in the north, said artillery stationed in the base has been used to bomb towns and villages in rural Aleppo and the neighboring province of Idlib.
The base is situated 25 km west of Aleppo, Syria's commercial and industrial hub, about half-way between the city and the Turkish border.
Syria and Israel exchange fire in Golan Heights
Israel artillery has fired back at Syria after gunfire hit an Israeli military vehicle in the Golan Heights. The incident comes amid high tensions in the region as Israel is waging an offensive against Gaza while civil war continues in Syria.
No one was injured in the exchange of fire on Sunday, the Israeli military said.
This has been the latest spillover of violence from Syria, where rebel fighters are trying to topple the regime of Bashar Assad.
"Shots were fired at Israeli army soldiers…in the central Golan Heights," an army spokeswoman told AFP. "Soldiers responded with artillery fire towards the source of the shooting."
The Israeli military however did not know if they were attacked by Syrian rebels or forces of the Syrian government.