the.com/trench coat

A raincoat that peaked in the trenches and never left the costume department.

means A belted, double-breasted waterproof coat, originally military outerwear, that became a civilian wardrobe staple and a visual shorthand for spies and detectives.

from Born from British military outfitters (Burberry and Aquascutum both claim credit) who developed weatherproofed gabardine coats for officers before and during World War I — literally designed for standing around in trenches. Its practical features (storm flaps, D-rings, epaulettes) were functional battlefield gear, not fashion flourishes. After the war, soldiers kept wearing them home, and Hollywood did the rest — by the mid-20th century it was less 'trench warfare' and more 'noir detective lurking under a streetlamp.'

origin
designed for WWI officers, not detectives
maker
Burberry and Aquascutum both claim credit
belt
D-rings were for grenades, not style
irony
became flasher and spy shorthand, not soldier
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