While on scene of a water rescue in Broadkill Beach... Slaughter Beach and Milton units were advised to switch to Sussex dispatch and standby...At 13:18 hrs 89 & 85 were dispatched to a field fire.... Units arrived to find a field with several spot fires and one fire attempting to travel in the woods... Slaughter Beach brush trucks put a knock down on that fire... Engine 85-4 arrived on scene and doused that fire with the front deck gun... Situation under control at 13:42 and Milton units cleared at 13:58... Milton units on scene: Brush 85-00,Engine 85-2,Engine 85-4,Tanker 85, and DSFP...