His works during this period were well-received for their style and readability, although they also tended to be less well researched, which has caused them to be questioned by younger historians. Several of these works, including "English Saga" (1940), "The Years of Endurance 1793–1802" (1942), and "Years of Victory, 1802–1812", drew notable criticism, particularly for his preoccupation with comparing Napoleon and Hitler. The shortcomings of these works, possibly combined with their unusual popularity, helped ensure that he never received the highest academic honours.