The relatively peaceful period that followed the Napoleonic Wars saw the uniforms of the Royal Marines again closely follow Army styles. "Bell Top" Shakos and tight tail coats were adopted, regardless of their suitability for seagoing conditions. The Royal Marine Light Infantry continued to wear red coats with dark blue collars and cuffs. The Royal Marines wore dark blue serge jackets in the Anglo-Egyptian Campaign of 1882 with embroidered badges on their collars - bugle horns for the RMLI and grenades for the RMA. During the subsequent Sudan Campaign a light grey field uniform was adopted. During the siege of the Peking Legations in 1900 the RMLI wore their usual hot weather ship-board working dress of  blue field service cap, blue tunic and white trousers. Khaki or all white tropical uniforms were worn subsequent to the relief of the Legations. In 1905 a white cloth helmet with bronze fittings was adopted to be worn with the scarlet and blue full dress of the RMLI and the dark blue and red of the RMA. This headdress was replaced in 1912 by the white Wolseley pattern pith helmet, which remains the most distinctive feature of modern Royal Marine full dress. The Royal Marine Brigade sent to Ostend in August 1914 wore dark blue undress uniforms but khaki service dress or khaki drill was worn for subsequent active service on land during World War I. During the Inter-War years the newly merged Royal Marines wore a full dress that combined features of both the RMLI and RMA uniforms worn until 1914. This comprised a Wolseley helmet, dark blue tunic and trousers with scarlet collars and trouser welts. Shoulder cords and slashed cuffs were in yellow. This dress is still worn by the Royal Marines Band Service. During World War II the Royal Marines wore khaki or blue battledress but retained their dark blue undress uniforms with red-banded peaked caps for certain off duty or ceremonial occasions. The well known green beret was introduced for the Royal Marine Commandos in 1942. The modern Royal Marines retain a number of distinctive uniform items. These include the green beret, the green "Lovat" service dress, the dark blue parade dress worn with the white Wolsley pattern helmet (commonly referred to as a "pith helmet") or red & white peaked cap, the scarlet and blue mess dress for officers and non-commissioned officers and the white hot-weather dress of the Band Service.