" I am sure S-2 can add to it."
We anticipated a conventional battle with regular Iraqi army forces and that would mean that our divisional systems would very much be in play.
In fact they were. Here's the OrBat as of 1 May 2003. Some of these units arrived after the fact (4th I.D. (Mech) would be an example.
On Point-OIF OrBat 1 May, 2003
In any case, I counted just oodles and oodles of towed 155, SP 155, and MLRS, to include three battalions by the Brits.
Those missions have been downgraded and altered over time. Most artillery units deploy with some-not all of their weapons now while maintaining other stabilization responsibilities.
He's confusing post invasion deployments with the invasion.
For others, The US Army uses its arty both rocket and tube along with attacked helos to range 5-90km behind the enemy lines so the battalion through corps areas are under fire and the USAF takes over from there and does the deep battle. The goal is to create a seal that keeps the enemy units on one side trapped and the reinforcements on the other out of the fight. It was designed to break the Soviet echelon system, it also happens to work great vs a force not big enough to do the echelon attack as Iraq found out in 91 and 2003.
other helo and tube artillery assets are tasked with direct support of the maneuver units aided by USAF assets like the A-10. What you end up with is a lethal combined arms system. Although the US tube artillery is dated, the MTSB, Pzh2000 and others offer better range, quicker RoF or other advantages and the Russian Smerch with the krapnosl (sp?) fire and forget round puts US artillery technology squarely into the nearing obsolesce category.