<p>SeaHwang,</p>
<p>The service requirement differs from service to service, but here’s a rough rundown from what I remember…</p>
<p>Army: three years (four years for scholarship winners)
Or part time in some circumstances</p>
<p>Navy: I think Navy ROTC requires four years active, four years inactive.</p>
<p>Air Force: Don’t know.</p>