He's 12 and can go on for hours about them, rattling off their armor thickness (in mm), caliber of their guns, horsepower of their engines, declination and traverse speeds of their turrets, etc.
On first skim of this comment I thought these were details about trains and I was very concerned about how weaponized trains had become.
I personally wouldn't lead an assault against modern trains. You would always know the direction they are headed, they know it as well, and you could sabotage it all you want but that train will still barrel right through your fortifications
Anyone who's ever seen Super 8 can attest. Even with a drastic change in momentum, direction, and drag coefficient, trains just keep crashing and don't stop for like an hour.