These are all of the documentation to accompany Operation Agile Spear which apparently was not included in the campaign set for downloading.
Download the zip file and unzip the Doc folder to the:
User_Name/Saved Games/DCS/Missions/Campaigns/en/Operation Agile Spear/(Doc folder)

All required documentation for Operation Agile Spear.
Download the zip file and unzip the Doc folder to the:
User_Name/Saved Games/DCS/Missions/Campaigns/en/Operation Agile Spear/(Doc folder)