What are your thoughts on using detailed action plans to further the objectives of strategic planning?  Why are action plans useful?

<![CDATA[What are your thoughts on using detailed action plans to further the objectives of strategic planning?  Why are action plans useful?
 
Reference
Swayne, L.E., Duncan, W.J., & Ginter, P.M. (2013). Strategic management of health care organizations (7th ed). Hoboken, NJ: Wiley]]>