Have NWOHR passport, want to apply for citizenship - military conscription and other questions

[tando]

As for question 1 (conscription)

Mandatory Military Age

No. Conscription age is till December of the year in which you turn 36. You have one-year grace period, beginning the day next to your return to the Republic of China if you previously had a household registration, or beginning the day next to your initial household registration following your return to the Republic of China if you have never had a household registration. Act Of Military Service System Article 3 A man aged 18 starts his military service day from January 1st of the proceed…

As for question 3

Your passport will be expire after 10 years, though you can renew it overseas.

https://www.roc-taiwan.org/uschi_en/post/51.html

Your household registration will be moved out if you don’t enter in Taiwan with your taiwanese passport for two years, so you will lose your citizenship. Though, you can reactivate your HHR anytime by entering taiwan with your taiwan passport.