Between the wars, de Fonblanque held a number of staff posts, culminating in being appointed Chief Administration Officer of Scottish Command in 1937. In October 1938, he headed a British mission with the task of observing the withdrawal of the Czechoslovak Army from the Sudetenland under the terms of the Munich Agreement.Wilkinson, Peter and Astley, Joan (2010), Gubbins & SOE, Pen & Sword Military, (p. 33)
