Article 52 The state shall provide free preventative healthcare and treatment of diseases as well as medical facilities to all citizens in accordance with the provisions the law. Establishment and expansion of private medical services as well as health centers shall be encouraged and protected by the state in accordance with the provisions of the law. The state shall adopt necessary measures to foster healthy physical education and development of the national as well as local sports. Articles 53 The state shall adopt necessary measures to regulate medical services as well as financial aid to survivors of martyrs and missing persons, and for reintegration of the disabled and handicapped and their active participation in society, s in accordance with provisions of the law. The state shall guarantee the rights of retirees, and shall render necessary aid to the elderly, women without caretaker, disabled and handicapped as well as poor orphans, in accordance with provisions of the law. Article 54 Family is the fundamental pillar of the society, and shall be protected by the state. The state shall adopt necessary measures to attain the physical and spiritual health of the family, especially of the child and mother, upbringing of children, as well as the elimination of related traditions contrary to the principles of the sacred religion of Islam. Article 55 Defending the country shall be the duty of all citizens of Afghanistan. Conditions for compulsory military service shall be regulated by law. Article 56 Observance of the provisions of the constitution, obedience of laws and respect of public order and security shall be the duty of all citizens of Afghanistan. Ignorance of the laws shall not be considered an excuse.