Large artillery setup, with cannons fed by some sort of "miasmatic" biological weapons.
https://cdn.fosstodon.org/media_attachments/files/111/306/604/746/890/297/original/8a024398014ebb18.jpg
There’s quite a lot in this book about chemical warfare, but I noticed something different later in the book: "The Miasmatic War - Manoeuvres of the Artillery of the Offensive Medical Corps"
Miasma was a popular theory at the time of how disease was spread. Perhaps he envisioned biological warfare in the future? And are those soldiers protecting themselves with surgical facemasks?
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