### Clue: Primarily, it's where old Japanese infantry met Americans? (3,4)
### Answer: IWO JIMA 
 ### Explanation: Primarily, it's where old Japanese infantry met Americans? (3,4)
First letters ('primarily') of '**I**t's **W**here **O**ld **J**apanese **I**nfantry **M**et** A**mericans'; &lit.