Related Rule
Argentina
Practice Relating to Rule 154. Obedience to Superior Orders
Argentina’s Code of Military Justice (1951), as amended in 1984, applies disciplinary sanctions to military personnel who refuse to obey a military order given by a superior (insubordination). Similarly, it defines the crime of disobedience, which includes actions by military personnel who, while not ostensibly or expressly refusing to obey, fail without any just cause to carry out a military order. It adds that no excuse shall justify disobedience or the failure to carry out a military order. 
Argentina, Code of Military Justice, 1951, as amended in 1984, Articles 667, 674 and 675.
According to a statement by Argentina’s Chief of Staff of the Army in 1995, nobody is obliged to carry out an order which is unethical or which contravenes military laws and regulations. 
Argentina, Chief of Staff of the Army, Statement of 25 April 1995, Revista de la Escuela Superior de Guerra, July–September 1995, p. V; see also Chief of Staff of the Army, Statement of 29 May 1995, Revista de la Escuela Superior de Guerra, April–June 1995, p. I.