own case in a court action all the way to the House of Lords. Otherwise, however, he disappeared from public view until his war service with the Royal Irish Regiment when he served on the Western Front with distinction in the New British Army formed for the First World War, reaching the rank of Captain and being awarded the MC. He organised patrols in "No Man's Land" so successfully that he was appointed special patrol officer to the 16th (Irish) Division. He was invalided out and became a recruiting officer in Ireland. He was appointed an Officer of the Order of the British Empire in the 1919 New Year Honours. He then made a return to Irish politics, working with Sir Horace Plunkett as Secretary of the Irish Dominion League, an organisation campaigning for dominion status for Ireland within the British Empire. Harrison was a lifelong opponent of Irish partition. He was Irish correspondent of The Economist from 1922 to 1927 and owner-editor of Irish Truth from 1924 to 1927. Harrison's two books defending Parnell were published in 1931 and 1938. They have had a major impact on Irish historiography, leading to a more favourable view of Parnell's role in the O’Shea affair. F. S. L. Lyons commented that he "did more than anyone else to uncover what seems to have been the true facts" about the Parnell-O'Shea liaison. The second book, Parnell, Joseph Chamberlain and Mr Garvin, was written in response to J. L. Garvin's biography of Joseph Chamberlain, which had ignored Harrison's first book, Parnell Vindicated: The Lifting of the Veil. Later, Harrison successfully repulsed an attempt in the official history of The Times to rehabilitate that newspaper's role in using forged letters to attack Parnell in the later 1880s. In 1952 he forced The Times to publish a four-page correction written by him as an appendix to the fourth volume of the history. During the difficult years of the Anglo-Irish Trade War over the land purchase annuities, declaration of the Republic, Irish neutrality during World War II, and departure from the Commonwealth, Harrison worked to promote good relations between Britain and Ireland. He published various books and pamphlets on the issues in dispute and wrote numerous letters to The Times. He also founded, with General Sir Hubert Gough, the Commonwealth Irish Association in 1942. By the time of his death, he was the last survivor of the