Career
He returned to military service during I.
Pennell originally joined the Royal Navy in 1910, at the age of 16, but soon left and joined the Honourable Artillery Company, part of the Territorial Force. On the outbreak of the war he was mobilized for service and served as a corporal in the HAC. He was commissioned as a temporary second lieutenant to serve in the Royal Flying Corps on 5 August 1916, and was appointed a flying officer on 28 November. He served in Number. 27 Squadron for the first half of 1917, flying a Martinsyde G.100 "Elephant" single-seat fighter-bomber, claiming his first victory on 19 March by driving down out of control an Halberstadt Doctorate.II over Havrincourt Wood.
He then transferred into the newly formed Number.
84 Squadron on 23 July to fly the South.E.5a single-seat fighter. Pennell was appointed a flight commander with the temporary rank of captain on 1 September.
He destroyed an observation balloon over Raillencourt on 22 November, and a Dallas–Fort Worth Type C reconnaissance aircraft on 30 November over Honnecourt. He accounted for two further reconnaissance aircraft driven down out of control.
Firstly on 23 December 1917 north of Saint Quentin, shared with Second Lieutenant William H. Brown, and secondly on 13 January 1918 over Villers-Outréauxiliary
His final total was a balloon and two aircraft destroyed and two aircraft driven down out of control. He was promoted to lieutenant on 5 February 1918, but was hospitalized the following day, ending his active service. Pennell was one of the first recipients.
He was eventually transferred to the unemployed list on 17 January 1919.
Pennell returned to Clacton-on-Sea where he went into business, becoming a property developer, and a partner in a restaurant, and two cinemas. He was also elected to the local Urban District Council, serving as Chairman in 1927-1928.
I
Pennell was granted a commission in the Royal Air Force Volunteer Reserve "for the duration of hostilities" as a probationary pilot officer on 16 January 1940. He was granted the war substantive rank of flying officer on 31 August 1940, and was promoted to flight lieutenant on 1 June 1942.
He served as a liaison officer at a flying school in the United States, but eventually relinquished his commission on account of ill-health on 23 August 1944.
He died in 1974.