International Boy Scouts, Troop 1
International Boy Scouts, Troop 1, Japan's first Boy Scout troop, was founded in 1911 with Clarence Griffin as Scoutmaster. Despite its early multinational character the troop's original registration was with the London headquarters of The Boy Scouts Association as "British Scouts in Foreign Countries". This initial charter was due to there being no international Boy Scout office and the "nationality requirement" that was in effect at the time. In 1918 the troop's character changed considerably when the new Scoutmaster, Bro. Joseph Janning, received approval from Lord Baden-Powell to officially reorganized the troop as a mixed-nationality, or "international", troop. B-P subsequently brought the Troop's situation before the 3rd World Scout Conference where the newly formed Boy Scouts International Bureau (WOSM World Scout Bureau) received approval to directly register Troop 1 and, in the future, other such "international" groups. The troop was then directly registered by the Boy Scouts International Bureau and was issued the Boy Scout movement's first "mixed nationality" charter, dated October 30, 1925, signed by Baden-Powell as Chief Scout and Hubert S. Martin as Director of the new International Bureau. Within a few years the nationality requirement was abolished and, even though the Bureau maintained the direct registration of Troop 1 and other groups already registered, new groups were requested to join the national organization of the country in which they were located and no new groups were chartered. Over the years the directly chartered groups one-by-one and for varied reasons slowly disbanded and by 1955 only Troop 1 remained. The troop has been continuously active, including war years, since its first meeting held in Yokohama, Japan on October 16, 1911 and currently consists of coed sections of Beaver Scouts, Cub Scouts, Scouts, Senior Scouts, and Veteran Scouts.
International Boy Scouts, Troop 1
In Japan, as early as 1908, Scouting came to the notice of a number of influential educators, some of whom adapted Scout ideas to their educational work. However, the first Boy Scout Troop to be established in Japan was begun in Yokohama by Clarence Griffin in 1911.
Robert Baden-Powell, 1st Baron Baden-Powell
Lieutenant General Robert Stephenson Smyth Baden-Powell, 1st Baron Baden-Powell, ( ; 22 February 1857 – 8 January 1941), was a British Army officer, writer, founder and first Chief Scout of the world-wide Scout Movement, and founder, with his sister Agnes, of the world-wide Girl Guide / Girl Scout Movement. Baden-Powell authored the first editions of the seminal work "Scouting for Boys", which was an inspiration for the Scout Movement.
Robert Baden-Powell, 1st Baron Baden-Powell
Educated at Charterhouse School, Baden-Powell served in the British Army from 1876 until 1910 in India and Africa. In 1899, during the Second Boer War in South Africa, Baden-Powell successfully defended the town in the Siege of Mafeking. Several of his books, written for military reconnaissance and scout training in his African years, were also read by boys. In 1907, he held a demonstration camp, the Brownsea Island Scout camp, which is now seen as the beginning of Scouting. Based on his earlier books, particularly "Aids to Scouting", he wrote "Scouting for Boys", published in 1908 by Sir Arthur Pearson, for boy readership. In 1910 Baden-Powell retired from the army and formed The Scout Association.

Question: The author of Girl Guides, and the first Chief Scout of the Boy Scouts Association, was also the man who signed the charter to allow international scouts in which year? 
Answer: 1925