There are 3 top NATO offices, the one you are thinking of is SACEUR that is always American. He is subordinate to the currently Italian CMC who is in turn subordinate to the SecGen who is Dutch.
In practice those 2 higher offices are always European.
There are 3 top NATO offices, the one you are thinking of is SACEUR that is always American. He is subordinate to the currently Italian CMC who is in turn subordinate to the SecGen who is Dutch.
In practice those 2 higher offices are always European.
There can be also cases where the de jure rules are that everyone is equal while there is a de facto understanding on the split in power.