included a metal spike at the crown. Early versions had a high crown, but the height gradually was reduced and the helmet became more fitted in form, in a continuing process of weight-reduction and cost-saving. In 1867 a further attempt at weight reduction by removing the metal binding of the front peak, and the metal reinforcing band on the rear of the crown (which also concealed the stitched rear seam of the leather crown), did not prove successful. The version of the Pickelhaube worn by Prussian artillery units employed a ball-shaped finial rather than the pointed spike, a modification ordered in 1844 because of injuries to horses and damage to equipment caused by the latter. Prior to the outbreak of World War I in 1914 detachable black or white plumes were worn with the Pickelhaube in full dress by German generals, staff officers, dragoon regiments, infantry of the Prussian Guard and a number of line infantry regiments as a special distinction. This was achieved by unscrewing the spike (a feature of all Pickelhauben regardless of whether they bore a plume) and replacing it with a tall metal plume-holder known as a trichter. For musicians of these units, and also for Bavarian Artillery and an entire cavalry regiment of the Saxon Guard, this plume was red. Aside from the spike finial, perhaps the most recognizable feature of the Pickelhaube was the ornamental front plate, which denoted the regiment's province or state. The most common plate design consisted of a large, spread-winged eagle, the emblem used by Prussia. Different plate designs were used by Bavaria, Württemberg, Baden, and the other German states. The Russians used the traditional double-headed eagle. German military Pickelhauben also mounted two round, colored cockades behind the chinstraps attached to the sides of the helmet. The right cockade, the national cockade, was red, black and white. The left cockade was used to denote the state of the soldier (Prussia: black and white; Bavaria: white and blue; etc.). All-metal versions of the Pickelhaube were worn mainly by cuirassiers, and often appear in portraits of high-ranking military and political figures (such as Otto von Bismarck, pictured above). These helmets were sometimes referred to as lobster-tail helmets, due to their distinctive articulated neck guard. The design of these is based on cavalry helmets in common use since the 16th century, but with some features taken from the leather helmets. The version worn