Interesting new book on early modern military intelligence networks and espionage. ”Spying for the Early Vasas: Intelligence in Sixteenth-Century Sweden” by Martin Neuding Skoog of @mhafhs.bsky.social . Open Access.
link.springer.com/book/10.1007...
This open access book examines intelligence organization in 16th-century Europe particularly Sweden during reigns of Gustav Vasa, Erik XIV and Johan III.