This is irony.
It is irony because war is anything but kind. Alliteration would be if both words started with the same letter. Style is not a device, and a simile is when you compare something to something.
Answer: He doesn’t really understand what’s going on, but he wants to be a part of it.
Explanation: took this one week ago in school
The word 'unfathomable' means not able to be understood.
to 'fathom' is to think or ponder on something so as to understand it.
Answer:
If it is argumentative: to prove a point. If it is informational: to inform.