Family stories

My father told me that my grandfather was a man in arms.
According to what my father told me, my grandfather lived in the times of dictatorship, and he was part of some group that took up arms against it. Some of the stories that I heard of my father, about his father, was that the national security went to her his house looking for him, that in the basement of the house where my father lived, there are were guns and bullets that was buried to hide their existence, and that once on a confrontation with government army, he was the only survivor and had to hide under dead bodies all day, to then escape.