(1) Notwithstanding anything contained in section 35 and sections 39 to 41 (both inclusive), no member of the Armed Forces of the Union shall be arrested for anything done or purported to be done by him in the discharge of his official duties except after obtaining the consent of the Central Government.
(2) The State Government may, by notification, direct that the provisions of sub-section (1) shall apply to such class or category of the members of the Force charged with the maintenance of public order as may be specified therein, wherever they may be serving, and thereupon the provisions of that sub-section shall apply as if for the expression "Central Government" occurring therein, the expression "State Government" were substituted.
Legal Commentary & Landmark Judgments: Section 42
Section 42 protects members of the Armed Forces of the Union from arrest for anything done or purported to be done by them in the discharge of their official duties, except after obtaining the consent of the Central Government.
If armed forces or central paramilitary personnel are arrested by local police without central government consent, file a habeas corpus petition under Section 528 BNSS and Article 226 citing Section 42 as an absolute statutory bar.