Alexander M. Haig served as Secretary of State for Ronald Reagan was indeed a NATO commander .
Jaap de Hoop Scheffer
jaap de hoof scheffer
Arnold Schwarzenegger
The Secretary General is NATO's chief spokesperson. They lead NATO through discussions and ensure decisions are implemented.
Dwight D. Eisenhower became the first supreme commander of NATO : Supreme Allied Commander Europe (SACEUR) .
Dean Acheson
EISENHOWER
NATO does not have a president. It's acting head is the Secretary General. The current Secretary General is Anders Fogh Rasmussen, former prime minister of Denmark.
Hastings Lionel Ismay was the first Secretary General of Nato, from its founding in 1949 to 1956.
Jaap de Hoop Scheffer
report to NATO's Supreme Allied Commander Europe prepare to conduct maritime strike and amphibious/expeditionary operations deter aggression against NATO members
The technicality is in the title within your question. The US President is the civilian "commander in Chief" of the US Armed Forces as stated in the US Constitution, however, during NATO supported conflicts, in the past, there has been a military position of Supreme Commander of NATO forces, which reports to the US President and NATO.
Gen Dwight Eisenhower was Supreme Commander of US Forces in Europe.He was Supreme Commander of NATO after that.
The NATO became a peacekeeping organization