Friday links

October 21 is Trafalgar Day: history, videos of reenactments and background explanations, and re-fighting with BBC's interactive Battlefield Academy.

The Biggest Guns in Human History.

The history of Oktoberfest is much bigger than beer.

Faust, Mephistopheles, Napoleon, Oliver Cromwell or a Hugenot: Halloween Ideas From an 1884 Costume Guide, with bonus 1880-era Batgirl costumes.

The Flyway Code: How birds avoid crashing into each other in mid-air.

A Deep Dive Into Uranus Jokes, because they never get old.

ICYMI, Wednesday's links are here, and include teaching yourself to echolocate, where to poop in King Henry VIII's Hampton Court Palace, jet engines on trucks, Rita Hayworth's birthday (and an excellent compilation of her dancing), and patching crumbling walls with LEGOs.