gill0610, my DS is at Clemson in AFROTC and is an engineering major. For the AF, the extended scholarship does not extend his service obligation, so I would think that the Army is the same way. For what it's worth, my DS is in Civil Engineering and will be graduating and commissioning in December. He only needs 6 hours this fall and in hindsight wishes he had agreed to complete his degree in four years. He's ready to get on with it! He said he could have easily finished in four even with the ROTC commitment and many other clubs and organizations he participated in. Not to disparage CE, but I do believe that EE , ChemE and ME are more challenging and probably merit 4.5 or 5 years.