Extract from the Royal Canadian Air Force.
Leadership depends on simple human qualities. Above all, a leader requires the confidence of his men and this is to be gained only by commanding their respect for his personal character and professional knowledge; his sense of justice and common-sense; his energy, keenness and fore-thought; his indifference to personal danger and readiness to share the men’s hardships; his cheerfulness in the face of difficulties; the clearness and simplicity of his orders and his firm insistence on their execution; the pride he takes in his command.
~ Donald A. and Eleanor C. Laird, The Technique of Handling People (1943)