Naika 
The Guards coat, also known as the Guards’ greatcoat, is a military-inspired outerwear garment that has its origins in the uniforms worn by the guards of various armies. It is typically a long coat, often reaching below the knees, and is designed to provide warmth and protection in cold or inclement weather.
The Guards coat became popular in civilian fashion during the late 19th and early 20th centuries. It was adapted from military styles to become a fashionable and practical overcoat for everyday wear. The exact date of its creation as a civilian garment is not precisely documented, but its rise in popularity coincided with the Victorian and Edwardian eras.
The coat’s design features may vary, but it often includes elements such as a double-breasted front with large buttons, a high collar that can be worn up for added protection, and deep pockets. The Guards coat remains a classic and timeless style in men’s fashion, known for its versatility and ability to complement both formal and casual attire.
Read about other types of coats :
References:
- https://www.alamy.com/guards-coat-technical-fashion-illustration-with-double-breasted-midi-length-round-collar-peak-half-belt-flat-jacket-template-front-back-white-grey-color-style-women-men-unisex-top-cad-mockup-image418274736.html
- https://www.pinterest.jp/pin/495747871461939136/?send=true
- https://tranquilhouse.kr/45/?idx=33
