The fire started in the Kilo 2 training area around 4 p.m. during a training exercise. It has burned 450 acres.
The Camp Pendleton Fire Department and mutual aid assets continued to fight the fire with strike teams and hand crews.
Two firefighters reportedly suffered minor injuries. One suffered smoke inhalation and the other was burned. Both are in stable condition.
There was no reported damage to structures and the fire does not pose any threats to structures.