Lord Ismay: NATO's First Secretary General (nato.int)

• Appointed first NATO Secretary General in March 1952.
• Previously Chief of Staff to Churchill and Attlee.
• Became Chairman of the North Atlantic Council in 1956.

"Lord Ismay served as NATO's first Secretary General from 1952 to 1957. A British military officer, he previously served as Chief of Staff to Winston Churchill and Clement Attlee during WWII and later assisted in India's independence negotiations. He shaped NATO's early leadership structure, eventually becoming Chairman of the North Atlantic Council in 1956."