sentences:  He later served in the First World War and achieved the rank of Lieutenant-Colonel in the Grenadier Guards.Dalrymple-White was also involved in politics and sat as Member of Parliament (MP) for Southport from January 1910 to 1923 and from 1924 to 1931.In 1926 he assumed by deed poll the additional surname of Dalrymple and the same year he was created a baronet, of High Mark in the County of Wigtown.