(2) The board shall consist of a chairperson and not less than four other persons, each of whom shall be of high moral character and proven integrity, appointed by the President with the approval of Parliament. (3) The functions of the board shall be prescribed by Parliament and shall include— (a) registering and issuing national identity cards to citizens; (b) issuing Uganda passports and other travel documents; (c) granting and cancelling citizenship by registration and naturalisation; (d) granting and cancelling immigration permits; and (e) registering and issuing identity cards to aliens. (4) The functions of the board set out in clause (3)(a), (b) and (d) of this article may be decentralised to the district level. 17. Duties of a citizen. (1) (a) (b) (c) (d) (e) (f) (g) (h) (i) (j) It is the duty of every citizen of Uganda— to respect the national anthem, flag, coat of arms and currency; to respect the rights and freedoms of others; to protect children and vulnerable persons against any form of abuse, harassment or ill-treatment; to protect and preserve public property; to defend Uganda and to render national service when necessary; to cooperate with lawful agencies in the maintenance of law and order; to pay taxes; to register for electoral and other lawful purposes; to combat corruption and misuse or wastage of public property; and to create and protect a clean and healthy environment. (2) It is the duty of all able-bodied citizens to undergo military training for the defence of this Constitution and the protection of the territorial integrity of Uganda whenever called upon to do so; and the State shall ensure that facilities are available for such training. 18. Registration of births, marriages and deaths. The State shall register every birth, marriage and death occurring in Uganda.