The Majors are within categories called "Academic Discipline Mix" = ADM.
It is easy to switch from the ADM you list on your application to a more technical one, or to switch majors within the list contained in your ADM. It is more difficult to switch to an ADM less technical, as that requires cadre approval. Last year and all years prior I was told it didn't matter, so this is a NEW policy about swithcing to less technical majors than the one listed on your Scholarship Award letter. I was told 18 months ago by a PMS that switching to a less technical ADM would require formal approval starting with the freshman cadets who came in this past Aug/Sept. The Scholarship Award letter also stipulates the Academic Discipline Mix for which the Scholarship is awarded.. i.e. Academic Discipline Mix: Technical/Management.
ADM4: Engineering
ADM3: "Physical Sciences/Analytical": Math and Sciences
ADM2: "Technical/Management" -- Most social sciences and business
ADM1: "Generalist" -- Liberal arts (languages, english, history, sociology, anthro, music, etc.)
I assume there is a list in your application, but the ADM categories are shown here, starting in Appendix B, page 20. Notice the rationale for awarding Scholarships based on ADM is discussed, and further notice that switching "down" to a less technical major is beyond the authority of the Battalion PMS.
http://www.rotc.armstrong.edu/Documents/Scholarship Regulations/CC Reg 145-1.pdf