Retrograde in History · 1745

Battle of Hohenfriedberg

On June 4, 1745, Mercury was mid-loop — retrograde in Gemini, tracing backward through 13°29′ of the sign.

WhenJune 4, 1745♊︎Gemini 13°29′Rx windowMay 23 – Jun 16, 1745
Mercury retrograde♊︎GeminiCazimiWikipedia
The record

On June 4, 1745, Frederick the Great's Prussian army decisively defeated the Austro-Saxon forces of Prince Charles Alexander of Lorraine at the Battle of Hohenfriedberg.

Coincidence, not causation: the date is real and ephemeris-based, but a retrograde window is observed, never blamed. For entertainment, not navigation.