At this point you must be trolling.

EDIT: just to be more constructive than you are and in case it helps someone else.

https://www.pcgamingwiki.com/wiki/Delta_Force_2

"Broken hardware renderer

The hardware renderer is broken on modern operating systems, causing severe graphical corruption and depth buffer problems. Using dgVoodoo 2 helps these issues partially, but does not fix the depth errors. A patch by Dege which improved the depth buffer problems to some extent is available in this Vogons thread."

Vogons thread: Delta Force 2

If you're not trolling (and suffering from an unhealthy obsession about hex-editing exes and dlls), what have you tried? Did you try that patch in that thread?
This took me exactly 2 minutes to search and post for you here. Either you haven't done it before posting and that's bad, or you've done it but thought it wasn't worth your time mentioning it in this thread - also bad.

Be better

miller11568 wrote on Yesterday, 09:01:

Tried dgVoodoo2 but I still get depth buffer errors where I can see buildings or vehicles through the terrain in Delta Force 2. Can someone help me hex edit the executable or DLLs to fix these depth buffer problems?

Dege was partially successful as said in the other reply. I would be happy if you can improve it completely