What is the verbal irony in lord of the flies on chapter 2?

I'm not sure this is the one you're looking for, but soon after the chapter starts (it's on the first page of the chapter in my book) we see an example of verbal irony:

Jack broke in.

"All the same you need an army--for hunting. Hunting pigs--"

Armies aren't used for hunting (protecting from hunger, an internal threat), but for fighting other groups of people (protecting from war, an external threat). Thus, this is an example of verbal irony.