sentences:  N. H. Gibbs
  
  Norman Henry Gibbs (17 April 1910, in London – 20 April 1990, in Witney, Oxfordshire) was Chichele Professor of the History of War at Oxford University for 24 years from 1953 to 1977, the longest tenure of all who have held the chair since its establishment in 1909.Gibbs was an Open Exhibitioner at Magdalen College, Oxford, in 1928, becoming Senior Demy in 1928.