Retrograde in History · 1801
Battle of Copenhagen
On April 2, 1801, Mercury was mid-loop — retrograde in Aries, tracing backward through 7°02′ of the sign.
WhenApril 2, 1801♈︎Aries 7°02′Rx windowMar 20 – Apr 13, 1801
The record
On 2 April 1801, a British naval fleet defeated a smaller force of the Royal Dano-Norwegian Navy anchored near Copenhagen, a conflict driven by British fears that the Danish fleet would ally with France.
Coincidence, not causation: the date is real and ephemeris-based, but a retrograde window is observed, never blamed. For entertainment, not navigation.