I'm guessing they (authors of battlezone) and the article aren't aware of BZFlag[1]. I started playing it in 1995 on SGI machines. I now play it on my laptop. This is definitely 3D, and the tanks can jump.
IEEE has had this bad habit of recently republishing some old era articles as if they were current. I find it nostalgic but also disconcerting.
Here's one obvious fix. First line of the article, italics: "Originally published x/y/zz".
[0] https://www.bzflag.org/media
[img] https://www.bzflag.org/assets/images/media/screenshots/space...
Did you play Battalion back in the day?
I could never get Battalion to compile under Linux or AIX, but it’s been almost thirty years since I last tried.