John Rutherford Armstrong ARA (1893 – 1973) – British artist who served with the Royal Field artillery in WW1

Poretrait c. 1933

 John Rutherford Armstrong was born on 14th November 1893 in   Hastings, Sussex.  He was the third son of the Rev’d William   Alexander Armstrong and his wife, Emily Mary, née Cripps. 

 Educated at St Paul's School, London (1907–1912), he went on to   read law briefly at St John's College, Oxford, before starting a short   period of studies at the St John's Wood School of Art, London until   the war intervened.

  During his service as an officer in the Royal Field Artillery in   WW1, the period he spent in Salonika fostered a lifelong interest in   the painting and pottery of ancient Greece, a subject that appeared repeatedly in his later work. and his career in painting and design   began after his return and demobilization

Sources:

Photo of Armstrong c. 1933 from https://www.jennaburlingham.com/artists/361-john-armstrong/biography/