; and (2) service performed before, on, or after the date of the enactment of this Act. 3. Simplification of eligibility criteria for Department of Veterans Affairs Post-9/11 Educational Assistance (a) In general Paragraph (1) of section 3301 of title 38, United States Code, is amended to read as follows: (1) The term active duty has the meanings as follows (subject to the limitations specified in sections 3002(6) and 3311(b) of this title): (A) Active duty as described in section 101(21)(A) of this title. (B) Active duty for training as described in section 101(22)(A), (C), and (E) of this title. (C) Active duty as defined in section 101(12) of title 32. (D) Full-time National Guard duty as defined in section 101(19) of title 32. . (b) Effective date The amendment made by subsection (a) shall take effect on August 1, 2021, and shall apply with respect to— (1) academic years beginning on or after August 1, 2021; and (2) service performed before, on, or after the date of the enactment of this Act.