The trench coat was born in the late 19th century as functional outerwear for British officers. During World War I, it was adapted for life in the trenches — hence the name — with military details such as epaulettes, storm flaps, and D-rings. After the war, the trench coat moved from the front lines to the streets, embraced by intellectuals, actors, and style icons. By the mid-20th century, it had become a cultural symbol, representing both practicality and understated elegance. Today, it stands

Trench Coat Guide: History, How To Wear, & Where To Buy