Beresford joined the
7th Hussars as a
Second lieutenant in February 1887, was promoted to
Lieutenant on 10 April 1889, and to
Captain on 7 October 1896. He saw military service mainly in Africa, first during the
Second Matabele War in 1896 and later during the
Second Boer War. In January 1900 he was seconded to the Staff, and appointed an
Aide-de-camp to the
Duke of Connaught, Commander-in-Chief of Ireland. In early February 1902, he was appointed in command of the 37th Battalion,
Imperial Yeomanry, with the temporary rank of
lieutenant-colonel, and the following May left
Aldershot with his Battalion for service in South Africa. The battalion arrived after hostilities ended in early June, and left for home again on the SS
Avondale Castle in late December 1902. From 1903 to 1904 he served in Somaliland. After retiring from the Regular Army, he became commanding officer of the
South Irish Horse (
Special Reserve) on 20 January 1912. In 1910 he succeeded his elder brother in the barony. This was an
Irish peerage and did not entitle him to an automatic seat in the
House of Lords. However, in 1912 he was elected as an
Irish representative peer and was able to take a seat in the upper chamber of Parliament. From 1916 to 1919 he was Chief Press Censor for Ireland.
Time magazine on 5 May 1930 reported his stance on British taxation: "The time may have come," said Lord Decies ominously, "when our wealthy men should seriously consider whether they must send their money out of this country." As Director of the British Income Taxpayers' Association, he vowed that he would suggest to them that "the time may have come. ..."
Polo Beresford was an Irish
polo player in the
1900 Summer Olympics. He was part of the
Foxhunters Hurlingham polo team which won the gold medal. In 1908, he played in the first international polo match between England and Argentina at the
Hurlingham Club in
Hurlingham, Buenos Aires alongside
Alexander Godley. ==Personal life==