A trust fund established to finance the retirement cost of active and reserve military personnel. An accrual amount is transferred monthly from the military personnel accounts to the Fund based on a fixed percentage of basic pay for full-time and part-time personnel. The accrual amounts are determined by the DoD Board of Actuaries who are appointed by the President for 15 year terms. In addition, amounts are deposited into the Fund to liquidate the unfunded liability of retired pay earned prior to establishment of the Fund. Interest on investments of the Fund assets in Federal Government securities are also transferred into the Fund.