A doubt about Engineers / Sappers

[Adm.Lee]

Originally Posted by Webstral

In the early 90's, heavy divisions had an engineer brigade (DIVENG) that included one battalion for each brigade. Each maneuver battalion thus had its own engineer company. Light divisions had to make do with one company per brigade.

Webstral

I wonder if these were fresh-raised battalions, or were they re-assigned from the brigades already assigned to Corps or Armies? Given that the '90s, the US had 8? heavy divisions, that's 16+ new battalions and their brigade HQs, at a time when the Army was being cut back.