In the Department of Defense there are:
34 - four star generals/admirals
124 - three star generals/admirals
278 - two star generals/admirals
439 - one star generals/admirals
Throw in the U.S. Coast Guard and you have 900 generals and admirals on active duty today. This is roughly the same number of generals/admirals who were on active duty in WWII when our military was 12,000,000 strong.
Given that on any given year 15-20% of those generals/admirals will retire each year it doesn't take much figuring to realize that the number of generals calling for Secretary Rumsfeld to resign is laughable.
This is nothing more than a "drive by media" event.