Could you please be more specific? If you are asking from a biblical perspective, Abel, son of Adam and Eve, was the first person to die, killed by his brother, Cain.
If you mean in terms of war, you will need to specify which war. I note your question is in the categories of the US Civil War and World War I.
onna
YAMA
he was the first person ever to have cancer
Jacob Sugden technically whos funeral took place in the first episode ever
Who is the first person to die in the railway?
Probably the first person who ever existed.
Dead
In Genesis (bible), Adam was the first person alive.
Eve from the bible was the first person to die
Mohammed Hassan
The first person ever crowned on musical.ly was the creator.
Acacia was the first person to ever win.
Mack pall was the first person