This is the 11040th most frequent Russian word.
героическую
Heroic.
In this sentence, 'героическую' (heroic) is used as an adjective modifying 'борьбу' (struggle), describing the nature of the struggle.
Этот фильм показал героическую борьбу людей за свободу.
This film showed the heroic struggle of people for freedom.
Here, 'героическую' again serves as an adjective, describing 'историю' (history), indicating its inspirational and bravery-related quality.
Они вспоминали героическую историю своей страны.
They were reminiscing about the heroic history of their country.
The word 'героическую' is used to describe 'стойкость' (resilience), highlighting the courage and bravery exhibited.