11 to 18 years, as well as suggestions for organisation based around the patrol system established at Brownsea Island. The book was a runaway success and was reprinted six times in 1908 alone and was translated into a number of other languages including French, Italian, German, Chinese, Japanese and Hebrew. While the original intention was for the scheme to be used by existing youth groups, groups of boys from across the UK took it upon themselves to form into Boy Scout Patrols and to seek adult leadership, resulting in the formation of local Boy Scout Troops, each of several Patrols. The movement began to develop over the next few years: the first Scout camp at Humshaugh took place in August–September 1908, the Sea Scout branch was formed to provide specialist nautical training in 1909 and badges and tests began to appear from around this time as well with 33 available by 1909. The same year saw the first National Scout Rally at the Crystal Palace attaracting 11,000 Scouts and the formation of a headquarters support structure for the fledgling movement. War and peace: 1914-1945 The outbreak of World War I saw the scouts contribute on the home front and through organising welfare facilities on the western front. At home Sea scouts performed cast-watching duties, Scouts acted as messengers and guarding key points on the railway network and worked the land among other tasks. The war also saw the expansion of the movement for the first time as Scouting in the UK became more than just the core section we know as the Scout section today. 1916 saw the launch of the Wolf Cubs for younger boys which fed into the Boy Scouts and 1918 saw the launch of Rover Scouts for young adults which they could complete after the Boy Scouts. The first worldwide gathering of Scouts, the 1st World Scout Jamboree, took place in England in 1920 and began a precedent that continues to this day. Equally a separate branch of the section for those with additional needs was created in 1925, the Special Tests Branch, to include others into the movement. With the close of the 1930s and the outbreak of World War II Scouts once again helped on the home front with older Scouts helping as messengers supporting the ARP service, erecting home shelters, working as telephonists, assisting the Home Guard and helping as first aid orderlies.