USMA grads, after they complete the requisite time in service requirements and either separate or retire, may apply for the post-9/11 GI Bill and other benefits.
https://www.benefits.va.gov/gibill/post911_gibill.asp
More specifically:
https://gibill.custhelp.va.gov/app/...emy-or-had-an-rotc-scholarship-can-i-still-be
I am very sure cadets are not eligible. These are post-separation/retirement benefits, and the type of duty prior to separation is a key factor. Prior enlisted service may make a difference. The link directly above indicates how it works with SA and ROTC obligated service years.
If a cadet separates, there may be eligibility for the home state veterans department or agency (different from Federal VA) educational and other benefits. I have seen USNA mids separated, and while they were not eligible for Federal VA educational benefits, some of them did have some benefits through their home state’s program. One mid we sponsored was able to complete his BS at one of the designated state universities, tuition-free and with a book allowance. His state’s only requirement was he had to have been a resident of the state before going on AD and a DD-214 documenting 2 years of active service.