Around 1939, as World War II erupted across Europe, the patriotic Mr. Broadhead enlisted his faithful Rolls-Royce to assist the war effort. The military unceremoniously scrapped the rear limousine section and replaced it with a purposeful, albeit inelegant, ambulance body. Chassis GSR4 was put into service transporting sick and wounded soldiers from the local train station to the hospital, reportedly performing its critical duties without fault.
After the war, the car returned to the possession of Broadhead and the Kirkheaton Mill. The ambulance body was removed, and a more suitable shooting brake body was fitted in its place. Credit for the coachwork goes to S. Pexton & Son, or more specifically, Harold Pexton, who directed woodworker Reuben Metcalf and blacksmith Leslie Walshaw to frame and skin the body. It then returned to service at the mill as a high-end delivery vehicle, transporting wool goods to clients and guests to picnics in the countryside.