Actually, you're not "drawing pay", or technically, W-2 wages.
- Your scholarship tuition/fees are a MERIT award, just as it would be if a university awarded you a scholarship...just as you are not an employee of the University granting merit award, you are not an employee of the DOD b/c of the award.
- Your Stipend of $300/mo is not a salary (not W-2 wages), but as it says, a STIPEND, therefore you are not an employee b/c of the stipend.
So, no, you are not an employee of the Army by contracting with ROTC.
One of the reasons Stipends are used, historically, is to offset living expenses OUTSIDE the mechanism of either hourly or weekly.monthly salary. Since you aren't receiving Salary, you aren't an employee, and the company/entity/Governement is not obligated to provide Benefits (medical, dental, 401k, etc.).
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Side issue not related to your specific question:
Neither Stipend nor tuition/fees/books are INCOME with respect to filing your 1040 income taxes.... At some schools, ROTC gives you the option to choose to apply the scholarship to tuition/fees, or to room/board. If you elect to apply your ROTC scholarship to room/board instead of tuition/fees, that IS 1040 INCOME, but you're still not an EMPLOYEE of the university. In the case of Room/Board, taxes are owed. In the case of Tuition/Fees they are not. This needs to be understood at schools where tuition/fees are slightly less than room/board... after tax consideration, the cheaper Tuition/Fees could be the better choice.