Soldiers and nurses go into a tent clearly marked with a Red Cross flag. A bomb is thrown near it. A soldier tries to dispose of it, but is injured in the attempt.
Here's an early example of British propaganda films at work; whether Mitchell & Kenyon, better known for taking pictures of people at local events, were approached by the authorities, or simply decided to make this film on their own, is another of those mysteries lost in the mists of time. By the First World War, the British government knew exactly how to get the people who could make the films that would portray their foes as monsters; in the Second World War, they simply co-opted the group that had been making films for the Post Office.
Mitchell & Kenyon, as I have remarked, are remembered by fans of very old movies for making movies of locals -- all wearing hats -- at public events, all over northern England and Ireland. Whether this is intended as a reenactment or a work of fiction, it demonstrated they had some actors on call.