I've dug up official numbers from the Department of Defense - details are below. I hope this is helpful!
A google search for "Department of Defense fiscal year 2006 budget" yielded President Bush's request for DOD funding for FY2006 here. Page 8 of the PDF breaks down discretionary funding for RDT&E (Research, Development, Test and Evaluation), which is 69.4 billion for FY06 and 66.8 billion for FY07.