To provide a minimum survivor annuity for the unremarried surviving spouses of retired members of the Armed Forces who died before March 21, 1974.

Directs the Secretary of the military department concerned to pay a monthly annuity to the unremarried surviving spouse of each member of the armed forces who: (1) died before March 21, 1974; and (2) was entitled to retired or retainer pay on the date of death. Provides the annuity amount, with a reduction by the amount of dependency and indemnity compensation to which the surviving spouse is entitled. Provides that such annuity is in addition to any pension to which the surviving spouse is entitled under Federal veterans' benefits provisions.