How did the us military interact with afghanistan's military forces during the war inafghanistan?

The U.S. military trained them.

Explanation:

An important aspect of the United States intervention in Afghanistan was the training of soldiers. The Afghan National Army was severely deficient. It suffered from shortages and desertion. 90% of the soldiers were illiterate, and they lacked formal military training and discipline. Therefore, the U.S. military was important in providing this training.