Mistakes & Development…

“You must be able to underwrite the honest mistakes of your subordinates if you wish to develop their initiative and experience.” “Warfare is mental, not physical.” General Bruce Cooper Clarke (-1988) US Army General who served in WW1, WW2 (awarded three Silver Stars) and the Korean War. Graduated from West Point  as an engineer in… Read More


Leadership & Learning…

“…leadership and learning are indispensable to each other. [and] …leadership must be guided by the lights of learning and reason or else those who confuse rhetoric with reality and the plausible with the possible will gain the popular ascendancy with their seemingly swift and simple solutions to every world problem.” [sound familiar?] John F. Kennedy… Read More

(Leadership) Fatigue Tends…

“Fatigue tends to be the fate of the ambitious, conscientious or the idealistic. It is really experienced by the astute, the lazy or the clever … who may go to considerable trouble to avoid the condition.” (Macksey, 1975, p.169-170). L’Etang, H. (1969) The Pathology of Leadership: A History of the Effects of Disease on 20th Century… Read More

Congratulations to My Wife: Dr Heather Marshall

This post is dedicated to my Wife, Doctor Heather Marshall (aka Mrs Marshall, Dr McCallum, Mother Bear!) who – after 19 years of hard graft, perseverance, dedication – has achieved one of her life’s ambitions, becoming a fully qualified, independent medical practitioner. Heather has wanted to be a doctor since she was a little girl displaying her… Read More

The British Army Command, Leadership & Management Programme

Getting Promotion The Army is committed to ensuring that soldiers have the training and skills required for promotion. A Command, Leadership and Management (CLM) programme is mandatory for those selected for promotion to the rank of Non-Commissioned Officer. The aim of the soldiers’ education programme is to improve the performance of soldiers both in barracks… Read More

USMC: 11 Leadership Principles

11 principles form the foundation of leadership in the United States Marine Corps. The principles are: Be technically and tactically proficient; Know yourself and seek self-improvement; Know your marines and look out for their welfare; Keep your marines informed; Set the example; Ensure the task is understood, supervised and accomplished; Train your marines as a… Read More