Keightley was able to benefit from Hobart's tutelage for only a brief period and having been promoted to the rank of major he was appointed in December 1938 an instructor at the Staff College, Camberley with a local rank of lieutenant colonel.
Keightley mohl profitovat z Hobartovy přízně pouze po krátkou dobu, během které byl povýšen na majora a v prosinci 1938 jmenován instruktorem na Staff College v Camberley v místní hodnosti podplukovníka.