U.S. Presidents & The Natural-born-citizen Clause

[Minimalist]

That would not survive examination by Factchecker.

Have you forgotten the Whiskey Rebellion?

"With 13,000 militiamen provided by the governors of Virginia, Maryland, New Jersey, and Pennsylvania, Washington rode at the head of an army to suppress the insurgency."
https://en.wikipedia.org/wiki/Whiskey_Rebellion

Did you read that story?

In October 1794, Washington traveled west to review the progress of the military expedition. According to historian Joseph Ellis, this would be "the first and only time a sitting American president led troops in the field".

Convinced the federalized militia would meet little resistance, he placed the army under the command of the governor of Virginia, Henry "Lighthorse Harry" Lee, a hero of the Revolutionary War. Washington returned to Philadelphia

If "leading an army in the field" means holding a few staff meetings and appointing someone to the command then I guess you are right but that is not my definition of being an army commander.  Lincoln was closer to the action when he attended McClellan's Grand Review in 1861 or when Jubal Early attacked Washington in 1864.