Lieutenant General Robert Stephenson Smyth Baden-Powell, 1st Baron Baden-Powell, OM GCMG GCVO KCB DL, also known as B-P or Lord Baden-Powell, was a British Army officer, writer, author of Scouting for Boys which was an inspiration for the Scout Movement, founder and first Chief Scout of The Boy Scouts Association and founder of the Girl Guides. After having been educated at Charterhouse School in Surrey, 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 military 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, 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 Boy Scouts Association. The first Scout Rally was held at The Crystal Palace in 1909, at which appeared a number of girls dressed in Scout uniform, who told B-P that they were the "Girl Scouts", following which, in 1910, B-P and his sister Agnes Baden-Powell formed the Girl Guides from which the Girl Guides Movement grew. In 1912 he married Olave St Clair Soames. He gave guidance to the Scouting and Girl Guiding Movements until retiring in 1937. Baden-Powell lived his last years in Nyeri, Kenya, where he died and was buried in 1941.

https://en.wikipedia.org/wiki/Robert_Baden-Powell,_1st_Baron_Baden-Powell