Originally Posted by: Raoul 
I thought I left some time on the table when I retired but figured it wasn't worth pursuing.
Active Duty 74-77
Active Reserve 80-85
Civil Service 83-11
My DD-214 only reflected the three active years (and that's all I reimbursed for).
Seems like I could have got credit for drills and summer camps from 80-82.
A weekend drill was considered four days (48 per year) plus 14 day camp = 62 days X 3 years = 186 days.
1 % more but a nightmare to document.
Weekend drills don't count (see first bullet under 2 below). The original poster seems to be covered by the note at the end. Here is the information from the CSRS/FERS Handbook:
E. Service in the Military Reserves
1. Inactive service in the various reserve components of the branches of the uniformed services listed in section 22A2.1-2, paragraph A, is not creditable for CSRS purposes even though such inactive periods may be counted toward certain types of military retirement under specific provisions of the applicable military retirement law.
2. Active service in the various reserve components of the branches of the uniformed services listed in section 22A2.1-2, paragraph A, is creditable for CSRS purposes. That is, service in any of the reserve corps of the armed forces is creditable when an individual is called to active duty, and for the active duty period only.
• Service during Weekly or Biweekly Training Periods
Members of certain reserve components attend weekly or biweekly reserve duty training sessions for which a reservist receives pay but not allowances. These weekly or biweekly training sessions are reserve duty--the reservist is not called to active duty--and therefore, they are not creditable for CSRS purposes.
• Service during Annual 15-day Training Periods
While the weekly and biweekly training sessions are reserve duty and not creditable, the annual 15-day training camp or cruise which reservists are called upon to attend (and for which they receive pay and allowances) is active duty and, therefore, creditable for CSRS purposes.
NOTE: When an employee performs active military service with a reserve unit during a period in which he or she is on military leave (or furlough) from a civilian position, the period is credited as civilian, not military service. (See section 22A6.1-2.)