I ran into those readings a few months ago and it's fascinating how much information is available for free these days. The webpage for
Assessing Revolutionary And Insurgent Strategies (ARIS) Studies where you'll find both parts in addition to other readings is:
http://www.soc.mil/ARIS/ARIS.html
They're available in PDF and EPUB format. Use EPUB for mobile reading because it allows for text to fit your screen instead of viewing it like a giant picture (like PDF does).