While I find it disturbing that I can find these open source on the web might as well put them to good use. I can tell you that the SBCt ( Stryker Brigade Combat Team) manuals are the legitimate ones Strongly suggest any serious CMSF or CMBS player really take a look at the SBCT Company manual. I have noticed the missions involving Strykers tend to get you blown up alot if you try and use the ICV like an IFV. Conventional Army Mission for Strykers is to work supported by heavy mech or lots of arty in Urban terrains against limited armor. the Most dangerous thing in a Stryker is the Dismounts. It is just a Taxi. But here is the link
http://armypubs.army.mil/doctrine/7_Series_Collection_1.html