Why do i feel the Call of Duty?

Im 17 just graduated high school in june and i leave for Army BCT Aug 29 im excited and ready to go but in my case my mom approves and my dad and grandma on my dad's side dont my moms whole family is excited for me and wants me to make it out of the little town i live in but why do i feel the "Call of Duty but all my friends and my dads side think ill hate it and that im being dumb. But theres something inside of me that feels the need to serve my country. Btw my parents are divorced.