On the eleventh day of November, people around the world will again honour those who have served in the armed forces through ceremonies such as Veterans Day in the US and Remembrance Day in the UK. Those of us fortunate to have not experienced battle will doubtless give thanks because, as the Civil War general, William T. Sherman succinctly put it, “War is all hell.” But no matter how terrible war has been and continues to be, philosophers, social scientists and, of course, business school academics have been able to extract valuable lessons from it.