 On 3 June 1918, he was promoted to brevet major, a rank he held until he was made a full major on 5 May 1927.Tidbury was twice wounded during the First World War; he was mentioned in despatches three times, received the Belgian Order of the Crown (4th Class) and the Italian Order of the Crown (5th Class).After his work in Germany, Tidbury was employed by the Foreign Office as part of the North Silesian Plebiscite Commission until 1922.