Military Family Separation Benefits Enhancement Act of 2008 - Entitles a member of the Armed Forces without dependents, in addition to certain other allowances or per diems, to a monthly allowance if the member is, for over 30 days, on: (1) duty on board a ship away from home port; or (2) temporary duty away from the member's permanent station.
Sets the allowance amount at one-half the amount of the monthly allowance under existing family separation allowance provisions.
Requires an annual increase in the family separation allowance based on the Consumer Price Index.