The match
Tae Guk Gi: The Brotherhood of War
2004South Korea★ 8subtitled
When two brothers are forced to fight in the Korean War, the elder decides to take the riskiest missions if it will help shield the younger from battle.
Search JustWatch →Close, not exact
1917, but for the sacrifice the story demands
Nothing in the catalog nails this hook as hard as 1917 does, but the films below come honestly close.
If you want a second one
Amaran
2024India★ 7.4subtitled
A heroic true story of Major Mukund Varadarajan, an Indian Army officer who displayed extraordinary bravery during a counterterrorism mission in Kashmir’s Shopian district. The film captures his courage in protecting his nation and the devotion of his wife Indhu Rebecaa Varghese.
If you want a second one
The Messenger: The Story of Joan of Arc
1999France★ 6.4subtitled
In 1429, a French teenager stood before her King with a message she claimed came from God; that she would defeat the world's greatest army and liberate her country from its political and religious turmoil. As she reclaims God's diminished kingdom, this courageous young woman has various amazing victories until her violent and untimely death.