On this date in 1573, the Swedish commander of Weissenstein (present-day Paide, Estonia), Hans Boije af Gennäs was executed when his fortress was overrun by Russian troops, during the Livonian War. A walled city with a Teutonic Knights-built keep, Weissenstein sat at a crossroads in interior Livonia and changed hands several times during this decades-long multilateral conflict involving Russia, Sweden, Denmark-Norway, Poland, and Lithuania — the latter two of which united into a Commonwealth during the war. Big picture, the Livonian War ran from 1558 to 1583; the stakes were, as one might guess, control of Livonia — essentially, the...