This is the 11427th most frequent Russian word.
доблесть
Valor or bravery.
In this sentence, "доблесть" refers to moral fortitude or bravery shown during adversity.
Настоящая доблесть проявляется в трудные времена.
True valor is revealed in difficult times.
Here, "доблесть" expresses the courage and honor demonstrated by the knight.
Доблесть рыцаря в бою впечатлила всех.
The knight's bravery in battle impressed everyone.
In this usage, "доблесть" serves to highlight an act or quality embodying distinguished courage or virtue.