Book excerpt: Indonesia is a country rich in cultural diversity and extraordinary history. One unforgettable chapter is the bravery of Indonesian heroes who fought to defend the independence and integrity of the nation. Among them is a hero from Kalimantan, who fought hard and made significant sacrifices for the Indonesian people. From this vast and fertile region, heroes were born who not only played a role in the struggle for independence but also in advancing the nation. This book discusses the encyclopedia of national heroes from Kalimantan.