38 U.S.C. § 3511: Duration of educational assistance

in the case of a person who first enrolls in a program of education using such entitlement before August 1, 2018 , for an aggregate period not in excess of 45 months (or to the equivalent thereof in part-time training); or in the case of a person who first enrolls in a program of education using such entitlement on or after August 1, 2018 , for an aggregate period not in excess of 36 months (or to the equivalent thereof in part-time training). be charged against the entitlement of any individual under this chapter; or be counted toward the aggregate period for which section 3695 of this title limits an individual’s receipt of assistance. had to discontinue such course pursuit as a result of being ordered to serve on active duty under section 688, 12301(a), 12301(d), 12301(g), 12302, or 12304 of title 10 or of being involuntarily ordered to full-time National Guard duty under section 502(f) of title 32 ; and failed to receive credit or training time toward completion of the individual’s approved educational, professional, or vocational objective as a result of having to discontinue, as described in clause (i) of this subparagraph, his or her course pursuit. The period for which, by reason of this subsection, an educational assistance allowance is not charged against entitlement or counted toward the applicable aggregate period under section 3695 of this title shall not exceed the portion of the period of enrollment in the course or courses for which the individual failed to receive credit or with respect to which the individual lost training time, as determined under subparagraph (B)(ii) of this paragraph. the parent or spouse from whom eligibility is derived is found no longer to have a “total disability permanent in nature”, as defined in section 3501(a)(8) of this title , the parent or spouse from whom eligibility is derived based upon section 3501(a)(1)(C) of this title is no longer listed in one of the categories specified therein, the spouse, as an eligible person under subparagraph (D) or (E) of section 3501(a)(1) of this title , is divorced, without fault on such person’s part, from the person upon whose disability such person’s eligibility is based, or the parent or spouse from whom such eligibility is derived based upon subparagraph (E) of section 3501(a)(1) of this title no longer meets a requirement under clause (i), (ii), or (iii) of that subparagraph,