Hi there
This depends on your canton (
sharing the AG link)
1. From my understanding children and parents can apply as individuals. So if they qualify they don‘t have to wait for you. The laws recently changed and their time in CH tell double between the ages of 10-20.
2. Military service is compulsory for men but optional for woman. When boys become citizens they are eligible for conscription. Link to
wikipedia Maybe ask a more specific question?
3. Not that I know of. I know of many young men who wait until 35 before applying because they don‘t want to go to the army.