The first units on site were used defensively, because they didn't have enough troops and equipment in place for an offense. It took WEEKS to get the tanks, etc., for the 24th to the ships in Savannah and then over to the Gulf.
When the ground war began, though, the 24th was definitely used offensively.
President G W Bush decided to press for an Iraqi war since at least a month before September, 2002, when the UN approved Resolution 1441.
Powell took forever to negotiate a unanimous resolution.
Nevertheless, by January 15, 2003, did we have all our military ducks in the row?