The first authentic event of modern history peculiarly connected with this district is the battle between Mahmud Ghaznavi and the Hindu army under Anand Pal in A.D., 1008. This battle, which decided the fate of India, is said to have been fought on the plain of 'Chhachh', between Hazro and Attock on the Indus. It ended in the total defeat of the Rajput confederacy, and India lay at the mercy of the Muslim invaders. It is probably that Islam in the district dates from this time. There are indications that the general conversion of the people took place some centuries later. During the reigns of the succeeding Sultans of Ghazni there were many invasions of india. Though the district lay in the path of the invading armies there was no special event on record connecting them with that. The northern portion of the tract was in 1205 the scene of the quarrel between the Gakkhars and Shahab-ud-Din Ghori. Having defeated the Gakkhars and restoring order in India Shahab-ud-Din, returning westward was camped on the banks of the Indus. His tent being left open towards the river for the sake of coolness, a band of Gakkhars swam across midnight to the spot where the King's tent was pitched, and entering unopposed, despatched him with numerous wounds.

Through the 13th century Ghaznavi and Afghan incursions continued. In the 14th century the Mughals came, and to that day there survive the remnants of Mughal settlements in the Attock and Fatehjang tehsils. It was across the Attock tehsil that Timur marched to throw all India into confusion.

In 1519 A.D., Babar marched through the district and crossed the Soan on his way to Khushab, Bhera and Chiniot. On his 5th invasion, in 1525, he marched along the foot of the hills from the Haro to Sialkot, and noticed the scarcity of grains due to drought, and the coldness of the climate, pools being frozen over.

But all these heroics have little internal connection with the history of the tract. The great portion of the district lying south of the Kala Chitta was out of the track of the invading armies, and the various tribes rather propitiated the foreign conquerors by the gifts of horses and hawks that invited attack. The 'Chhachh' was a desolate marsh, and no part of the district was rich enough to excite the capacity of Afghans and Mughals. The real history of the district is tribal.