III. Safeguarding Peace

From The Catechism of the Catholic Church

2313
Non-combatants, wounded soldiers, and prisoners must be respected and treated
humanely.
Actions deliberately contrary to the law of nations and to its universal
principles are crimes, as are the orders that command such actions. Blind
obedience does not suffice to excuse those who carry them out. Thus the
extermination of a people, nation, or ethnic minority must be condemned as a
mortal sin. One is morally bound to resist orders that command genocide.

PART THREE: LIFE IN CHRIST

SECTION TWO THE TEN COMMANDMENTS
- CHAPTER TWO YOU SHALL LOVE YOUR NEIGHBOR AS YOURSELF
  - Article 5 THE FIFTH COMMANDMENT
    - III. Safeguarding Peace

From The Catechism of the Catholic Church – rosary.team