This does not belong to a military family. Military families only include immediate family members, even relatives on the same household registration book. If your brother joins the army, you will be considered a military family, but your cousin will not. He's not your family. As for the extra points in the college entrance examination, it is only for those who join the army in remote areas, and it only means priority admission, and there is no such thing as extra points. The definition of remote areas is simply that the traffic is particularly inconvenient. You can only meet foreigners once every three or four months, and you can only go down the mountain or leave the island in two years.
There are many soldiers in China, so the bonus policy is very strict. Only the martyrs who have won the first class merit and their immediate family members are given extra points, and the second class merit is preferred.