In 1907 a selection of his speeches was published under the title "A Nation in Arms". Roberts provided William Le Queux with information for his novel "The Invasion of 1910" and checked the proofs. In 1910 Roberts' friend Ian Hamilton, in co-operation with the Secretary of State for War, Richard Haldane, published "Compulsory Service" in which he attacked Roberts' advocacy of conscription. This caused much hurt to Roberts. He replied, with the help of Leo Amery and J. A. Cramb, with "Fallacies and Facts" (1911).