For active duty military service between 1957 to 2001, service members are entitled to special military credits that boost their earnings which may increase their primary insurance amount (PIA) and social security payments.  For service after 1967 the social security administration (SSA) will automatically take care of adding this benefit.
However, if the service member had [...]

It goes without saying that a safe deposit box should be used to store things of importance.
For example

Copy of your will
Copy of insurance policies
Titles to your house and cars
Detailed list of bank and brokerage accounts, CDs and credit cards
Marriage license / Divorce decree
Expensive, rarely-worn jewelry
Birth certificates
Family heirlooms
Stock and bond certificates

But some items should not be [...]