How to dissect multiple objects evenly in a efficient way

Hey, everyone.

I’m working on larger exteriors and want to dissect all models evenly by this matrix I created. Basically slice them all into even pieces (excluding elevation changes). I am unable to figure out how to do it quickly and for now, I’m using 2 planes to cut the whole map into “spaghetti” on Y axis and then on X one. But naturally, this is a stupid way to do it, so I’m asking for a help from someone who knows better.

Any advice will be really appreciated! Thank you.

Hello, I kind of dont know what you want to do, can you explain int more or in a different way what should be the outcome.