This was published in a magazine in Finland (at the time part of Russia) during the Crimean war. The British were going to attack Russian holdings in Finland and wanted the civilians to think that they and their property was safe.
...As usual, the British lied. The first targets they attacked were warehouses with wood and tar that had been sold ...mainly to Britain. They showed up and did a lot of property damage, most of it to their own stuff.
Then they continued south attacking the cities along the coast until they were stopped at Kokkola when they lost the "skirmish of Halkokari" to a bunch of civilians and a few soldiers. The only British military vessel which is still captured is a boat in a Finnish museum.
Note that after the war the British government paid for the damages to Finnish civilians.