Retrograde in History · 1770

Battle of Chesma

On July 7, 1770, Mercury was mid-loop — retrograde in Cancer, tracing backward through 5°46′ of the sign.

WhenJuly 7, 1770♋︎Cancer 5°46′Rx windowJun 18 – Jul 12, 1770
Mercury retrograde♋︎CancerWikipedia
The record

On 7 July 1770, the Battle of Chesma concluded in the waters between Anatolia and Chios, marking the first of several disastrous fleet defeats for the Ottoman Empire against Russia.

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