On 14 September the Allied artillery fire began causing serious damage to some Bulgarian artillery batteries which decreased their ability to support the Bulgarian infantry. The Serbian infantry began its attack at about 10 AM and managed to enter an 800-meter part of the front line between the 23rd and 30th infantry regiments, which wasn't fortified or guarded in sufficient numbers. The Bulgarian companies that were sent to plug the gap failed to halt them and soon began retreating together with other forces that were in the area.