and daily working ("barrack" or "fatigue" dress). The British and United States armies were dependent upon voluntary recruiting and found that a smart uniform served to attract recruits and improve morale amongst those already serving. The British regimental system fostered numerous distinctions amongst different units. However, this was not limited to volunteer armies, with conscript armies of continental Europe retaining many of the colourful features that had evolved during the nineteenth century, for reasons of national and unit pride. Thus, in 1913 most French soldiers wore red trousers and kepis as part of their full dress, the majority of British foot regiments retained the scarlet tunics for parade and off duty ("walking out"), the German Army was characterised by Prussian blue, the Russian by dark green, and the Austro-Hungary Army by a wide range of differing facing colours dating back to the 18th century. There were usually exceptions to each of these rules, often distinguishing unique units. This included the German cuirassiers, who wore white full dress; British rifle regiments, who wore rifle green; and French mountain troops who wore large berets and light blue trousers. The U.S. Army with its "dress blues" was an exception, with cavalry, artillery and infantry being distinguished only by the different branch colours. After World War I most full dress uniforms disappeared. Many of the royal or imperial regimes that had taken a particular pride in the retention of colourful traditional uniforms had been overthrown and their republican, fascist, or communist successors had little incentive to retain old glories. Elsewhere cost and disillusion with the "peacock" aspects of old-fashioned soldiering had a similar effect, except for ceremonial guard units and such limited exceptions as officers' evening or off-duty uniforms. Modern armies are characterised by simple and drably coloured dress even for ceremonial occasion, with the exceptions noted above. However a general trend towards replacing conscript armies with long-serving professionals has had, as a side effect, a reversion to dress uniforms that combine smartness with some traditional features. Thus the U.S. Army announced in 2006 that uniforms of modern cut but in the traditional dark and light blue colours would become universal issue, replacing the previous grey/green service dress. This measure however proved a short lived one, being phased out after 2019. The French Army has, with the abolition of conscription, reintroduced kepis, fringed epaulettes and sashes in traditional colours to wear with camouflage "trellis"