A military camp located near the western city of Zolton, some 140 west of the capital Tripoli, was targeted with more than 12 military vehicles and two tanks destroyed, the east-based army's information office said in a statement.
The air force also targeted positions of the UN-backed government's forces 15 km east of Tripoli, the information office added.
The statement did not reveal any details about human casualties.
The east-based army and the UN-backed government have been fighting since early April over control of Tripoli, which is home to more than 2 million people.
The violence has killed and injured thousands of people, and displaced hundreds of thousands from their homes.
The east-based army, led by Khalifa Haftar, is allied with the east-based government, as the North African nation is politically divided between eastern and western governments.