I had the same concern when I came from Active Duty infantry to National Guard. I had heard the stories of a bunch of out-of-shape old men in the National Guard, but what I found was a much different story. I was assigned to the 3/172 INF (MTN), and that unit was more high-speed than the unit that I came from. The infantry units in the National Guard are a cut above many other units. I agree with ABNMTN when he says to check out the unit you're being assigned to. If you really want to get an idea of how well trained and motivated the soldiers in your unit are, ask your recruiter to take you to a drill weekend when they are conducting training. If they are a high-speed infantry unit, I guarantee you will be impressed and will have confidence that you could trust any one of the soldiers in the unit with your life, and guarantee they would expect the same from you.
-VTguard
SFC Anthony Fletcher
Operations NCO
86th IBCT (MTN)