Such have been in evidence since the history - changing conflict significantly named World War I, though most people treat these as normal parts of history.
Need sündmused on olnud selgesti äratuntavad alates murrangulisest konfliktist, millele pandi tähelepanuväärne nimigi — I maailmasõda —, kuigi enamik inimesi peab neid ajaloo loomulikuks osaks.