There were 40 presidents from 1789 to 1990. (Grover Cleveland served twice, I count him one; counting this way, George Bush was the 40th, who had started his term 1989.)
18
There were 25 US presidents who never served in the Senate.
14 presidents served as vice president before becoming president
Zero. Many Presidents served in the military, but none were in ROTC.
George Washington was the first President of the United States, taking office in April of 1789. William McKinley was elected to a 2nd term in 1900 as the 25th President.
Actually many future Presidents were commanded by Presidents. Example: JF Kennedy served in the Navy under Roosevelt and Trueman (Who served in the Army under Wilson). LB Johnson served in the Navy under FDR, George HW Bush served in the Navy under FDR & Trueman. Many of the Presidents served in the military and took orders from the Presidents in office.
42
no one knows
15
1
hunter lacy
to this day, 8th, 2010, there have been 44 presidents in the United States