The Battle of 73 Easting.

Wikipedia: http://en.m.wikipedia.org/wiki/Battle_of_73_Easting

The Coalition commander the armored troop, Captain (now Major General) HR McMaster, wrote this report on the battle: http://www.benning.army.mil/Library/content/McMasterHR%20CPT_Battleof73Easting.pdf

Maps: http://www.pbs.org/wgbh/pages/frontline/gulf/maps/10.html

This book was written by a veteran of the battle: http://www.amazon.com/gp/aw/d/1591145333

This short blog post was written by a veteran of the battle. Blog comments are instructive but of course not definitive: http://thisainthell.us/blog/?p=28890

Expanding on the original top comment, about the battle of 73 Easting.

If this is the one you were thinking of - the numbers are much smaller than your recollection:

9 M1A1s and 12 Bradley's destroyed 29 Iraqi tanks, 16 personnel carriers and 39 trucks in 23 minutes without any losses.

Here's a video of an interview with the assault leader, and some footage of the attack.

Here's a link to an AAR