sentences:  Through his friendship with Lord Roberts, Wilkinson obtained a post on the staff of the "London Morning Post" from 1895 to 1914.Convinced as early as 1874 that Great Britain was inadequately armed, he increasingly devoted his attention to the subject of the national defence.He became a key figure in the founding of the Navy League of Great Britain in 1894 and a serious student of the German military philosopher Carl von Clausewitz.