As a member of armed forces/police. Does the constitution permit me to be members of trade union?

Section II of the Trade Union Act make is unlawful for armed forces and police, the Nigerian security printing and minting company, prison services, customs preventive services, Central Bank of Nigeria, employees authorized to bear arms, including federal fire service among others to organize themselves or be members of trade union for the purpose of employment but can join consultative committees in their establishment. The justification for that of the armed forces and policy may be in the interest of public security and public order.