What is the origin of the idiom "hang up one's boots" and when to use it?

The origin of the idiom "hang up one's boots" is unclear, but it is believed to have originated in the sport of football (soccer), where a player would hang up their boots when they retired from the sport. It has been in use in English since at least the mid-20th century. This phrase is used to describe a situation where someone retires from a profession or activity, often after a long and successful career.