Соответствующая норма
Practice Relating to Rule 46. Orders or Threats That No Quarter Will Be Given
Under Lithuania’s Criminal Code (1961), as amended in 1998, the “order to kill … persons who have surrendered by giving up their arms or having no means to put up resistance, the wounded, sick persons or the crew of a sinking ship” during an international armed conflict or occupation is a war crime. 
Lithuania, Criminal Code, 1961, as amended in 1998, Article 333.