What is modern warfare really like? Some say it's a two-hundred-million-dollar drone firing a missile worth over a million dollars to hit a jeep that costs just ten thousand.
Commanding troops in battle is also a skill...
M4A1: Commander, this book of yours... has nothing to do with commanding troops in battle, does it?
Chen Shusheng: It's perfectly normal for a commander like me to know how to use firearms, right?
M16: Then what's this book on lockpicking for?
Chen Shusheng: The Iron-Blooded bases don't have keys, so sometimes we have to find our own way in.
UMP45: Commander, what's this book of yours, "Homemade Simple Armor"...