Break in service.
Break in service.
(i) Except as provided in paragraph (b)(5)(ii) of this section, the term break in service means a period of more than 90 days between the date when an individual is released from active duty or otherwise receives a complete separation from active duty service and the date he or she reenters on active duty.
(ii) A period during which an individual is assigned full time by the Armed Forces to a civilian institution for a course of education substantially the same as established courses offered to civilians is not a break in service.