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The Social Security Administration has a good tool to help you figure out eligibility for benefits.
It is located here: https://secure.ssa.gov/apps7/best/benefits/
I don't know if it is true of veterans taking Social Security, but it is important for most people to weigh the pros of taking Social Security early and getting benefits for a longer period of time verses delaying the start of Social Security and earning a higher amount of money in each time period.
NewRetirement has a calculator to help with this decision:
And, for other benefits you might be eligible for, you should check out the VA's Federal Benefits for Veterans and Dependents booklet.
**All above answers are provided as general information only. No warranty is made regarding the fitness or accuracy of the information provided in this answer. You should seek advice from a licensed CPA, attorney or CERTIFIED FINANCIAL PLANNER™ as to your unique financial situation.