On 7 December 1942 he was called up for military service as a science officer in the operational research department, RAF Bomber Command, High Wycombe.
He was part of a team of 30 working on Operation Glimmer, a scheme to convince the Germans that Britain was planning a landing at the mouth of the Pas de Calais.
[1] After graduation, Pease joined the AERE at Harwell, and worked initially on the neutron irradiation of boron nitride.
They had five children: Rosamund Mary, Sarah Frances, Christopher Fabian Delves, Michael Roland Wedgwood, and Joanna Rowan.
On 4 April 1998 Pease married Jean Frances White, a retired personnel officer but she died two years later.