Active duty retirement is straightforward to picture: twenty years of service, retire, start collecting pay. Reserve and Guard retirement runs on a completely different mechanic. Instead of counting years of continuous service, it counts points, accumulated drill by drill, and those points don't turn into a pension check until you reach retirement age, even though you may have earned your years of service decades earlier.

That gap between earning retirement eligibility and actually receiving pay trips up a lot of Reserve and Guard members, especially those who mix periods of activation with routine drilling. Here's how the points system actually accumulates, what qualifies as a creditable year, and what determines when the pay finally starts.