Wharton was a committed supporter of French imperialism, describing herself as a "rabid imperialist", and the war solidified her political conservatism. After World War I, she travelled to Morocco as the guest of the resident general, Gen. Hubert Lyautey and wrote a book In Morocco, about her experiences. Wharton's writing on her Moroccan travels is full of praise for the French administration and for Lyautey and his wife in particular.