The main industry during this period was agriculture, and the area surrounding the small town was blanketed with orange, lemon and walnut groves. The State Mental hospital south of the town was the largest employer. A few houses had sprung up to the north and south of town center. The Oxnard Army Air Field, built during World War II to the west of town, the Naval Air Facility at Point Mugu and the Seabee base at Port Hueneme brought many military personnel to the area, but there was little private industry or other source of non-agricultural employment.