Can a grand daughter ask for a share in grandfathers property.

My father is an ex- service men. My mother expired in my childhood only. I was bought by grand parents( mother's ). I did love marriage in 2009 . I was major that time . Unfortunately my husband recently expired in may 2016. Again I was alone . I want a share of my property of my grand father(dad father). Is any right to go legally for my share on that property. As iam widow i am not having enough money to hire a lawyer.so please kindly help me to file a case so that I will get an equal share in my property. And one more thing my father is an ex service man . I want to file a case to get half of my fathers pension. Because he didnt take care of me after my mom death till now. So pkease help how to approach army officials regarding this issue. I will be very thankful if you give me correct suggestions to solve my issues.