We have discussed firefighting Royal Enfields in the past. They are still being used (or reintroduced) in New Delhi and Bangalore today. Here is one of the earliest mentions, from October 20th 1913. The 6hp sidecar, for which nothing was impossible, could carry four firefighters and a length of hose.
And if you think those pictures were just staged, here is news from October 15th 1914,