理(り)性(せい) riseiを o失(うしな)っ()た() ushinatta人(ひと)た()ち() hitotachiが ga戦(せん)争(そう) sensouを o遂(すい)行(こう) suikouした shita。 People who had lost their reason carried out the war. Literal Reason [object-を] lost people [subject-が] war [object-を] carried-out. 理性を失った人たち (people who lost their reason) is a relative clause modifying 人たち. 戦争を遂行する (to carry out/wage a war) uses the formal verb 遂行する. warconflictrelative clause modifying a noun
理(り)性(せい) riseiを o失(うしな)っ()た() ushinatta人(ひと)た()ち() hitotachiが ga戦(せん)争(そう) sensouを o遂(すい)行(こう) suikouした shita。 People who had lost their reason carried out the war. Literal Reason [object-を] lost people [subject-が] war [object-を] carried-out. 理性を失った人たち (people who lost their reason) is a relative clause modifying 人たち. 戦争を遂行する (to carry out/wage a war) uses the formal verb 遂行する. warconflictrelative clause modifying a noun