Many generations Vietnamese has forgot their fellow who been FORCE to join France army to fight in a far far away land, in one of the most horror and brutal war in history of mankind.
The War to End All Wars, The Great War or World War One.
Why we must fight that war ? That is White man war, not our. But still our blood has been bleed there, in The Western Front.
For Mother France. To save it own citizens, few thousand colonists die is a cheap price to pay. And if they survive ? Just give them a Medal and things will be fine.