Instructions: This task involves annotating the answer type to a given question that involve some kind of complex reasoning (including numerical reasoning). Note that the questions require looking at more than one part of the passage to answer. There are 3 possible answer types (i) spans, (ii) numbers and (iii) dates. If the answer can be found in the passage, label it as "span". If the answer is a number, label as "number". Similarly, label "date" if you think the answer to the given question is a date.
Input: Passage: The 24th Infantry was re-instituted in 1995 and assigned to the 1st Brigade, 25th Infantry Division in Fort Lewis, Washington. The regiment served in the Iraq War from 2004 to 2005, and was decorated for its service. In 2006, during a re-organization of the Army, the regiment was re-flagged; however, the 1st Battalion was not included, and so it alone retains the regimental designation and carries on its legacy. It is now part of the 1st Brigade Combat Team , 25th Infantry Division at Fort Wainwright, Alaska.
Question: How many years after the 24th Infantry was re-instituted did it finish serving in the Iraq War?
Output:
number