At outbreak of the First World War, Rees organised a recruiting campaign.[5] In 1915 he volunteered for the Welsh Regiment eventually achieving the rank of Captain and also served in the Machine-Gun Corps.[1]
The Church
Rees was a devout Anglican who at one time thought about entering the Church. He retained an interest in ecclesiastical matters throughout his life and was a Lay Assessor in the Dioceses of Canterbury and Southwark. He was the author of a short work on disestablishment.[3]
Politics
Rees first entered Parliamentary politics at the 1918 general election when he was the Liberal candidate at Barnstaple in Devon. He declared he was a supporter of the Lloyd Georgecoalition but so was his Unionist opponent, C S Parker [6] He may have received the Coalition Coupon because he is described in one important and reliable record as a Coalition Liberal [7] but Roy Douglas, a historian of the Liberal Party, believes Rees was one of 29 Liberal candidates denied the coupon.[8] Another source indicates that Rees was denied the coupon but immediately accepted the Coalition Whip on getting into Parliament.[9] At the time of the election Rees stated that his political priorities were the housing question and the reform of the jury system.[5] He won the seat with a majority of 602 votes.
Rees was unable to hold his seat at Barnstaple at the 1922 general election losing narrowly by just 174 votes in a straight fight with the Conservative candidate Basil Peto. However, in 1923 when the Liberal Party was united around the question of Free Trade he won the seat back from Peto with a majority of 1,266 in a three-cornered contest including a Labour candidate. In 1924 he lost the seat back to Peto again in a straight fight by 1,195 votes. He did not contest the seat after 1924 or try to get back into the House of Commons for any other constituency.
Rees tended to be on the conservative wing of the Liberal Party. Chris Cook describes Rees as a member of a right-wing coterie of Liberal MPs who could usually be found supporting the Conservatives when the party vote was split during the period of the first Labour government of 1924.[10]