From the time of the New Model Army broad-brimmed Flemish hats were worn. After the restoration of the Monarchy in 1660 the Monmouth cap, a broad-brimmed, low-crowned felt hat, with one side of the brim generally turned up, was introduced.
During the period of the New Model Army, soldiers donned large, flat Flemish hats. After the monarchy's return to power in 1660, a new type of hat became popular: the Monmouth cap, characterized by its wide brim and low crown, often with one side turned up.