John Halsey has provided a picture of the 43 Protection Company, which includes his great grandfather Herbert Halsey. When the First World War broke out there were many "old and bold" volunteers who joined the local Territorial battalions (or were already members) but were either too old or not fit enough to serve overseas. These were organised into supernumerary companies and the Protection Companies were used to protect vulnerable locations such as railway stations (and possibly the canal at places like Berkhamsted?) from spies, saboteurs and other threats. In 1917 the Protection Companies became part of the Royal Defence Corps.