McLaughlin's doctorate was a study of the role of British Imperial defence policy in shaping the Rhodesian armed forces from the 1890s to the 1950s. During the Rhodesian Bush War, he served in operational areas as a field reservist in the British South Africa Police (BSAP). He set up the War Studies course at the University of Rhodesia (now the University of Zimbabwe) and was awarded an Association of Commonwealth Universities Post-doctoral Fellowship to the London School of Economics to study the British munitions industry in the First World War. He left the world of research and lecturing to carve out a successful career as a headmaster at major Independent schools in England. From 1999 to 2005 he was the Principal of the British International School in Cairo before his departure to head Casterton School.