2006 US Army Ranger Handbook (pdf)

[DMac]

Some good stuff in there:

http://www.fas.org/irp/doddir/army/ranger.pdf

[Libertytree]

Lots of good info for sure, the only problem is that the OP link is having trouble w/the DL. I found an alternate site though.

http://www.utc.edu/Academic/MilitaryScience/21-76%20Ranger%20HB.pdf