2012 Call to War Part 1 (There are 7 parts total. You can use the search function to find the rest of the parts of this series. I also intend to combine some of the lessons and upload them, for those interested.
You should probably listen to Chester Wright's 2011 Call To War series in order to get the most complete understanding on the topic.)
This audio is highly edited. The speaker is Chester Wright, from Annapolis MD. The topic / Subject is mainly prevailing prayer, or spiritual warfare via effectual fervent prayer. There are side line topics covered such as Christian living, soul winning, witnessing, walking in the Spirit, hearing and following God's voice, etc.