Killings of Indian civilians or Boer civilians by British forces... This is also real.

This and other actions by other similar colonial powers brought about the Hague and geneva conventions

Now let's go back to the German invasion of Yugoslavia in WWII. Novi Sad - 1942 : German forces execute a couple of thousand Serb civilians for the revenge of some 20 or 30 ambushed Wermacht soldiers. This is real.

And this and similar actions brought about the later Geneva conventions about the mistreatment of civilians.

THERE. IS. NO. EXCUSE. and there is no justifiable explaination.

Any idiot can face a crisis - it's day to day living that wears you out.