There’s a deliberate effort right now to confuse the current National Guard with the draft-era version of which George Bush was a member. Looks like Colin Powell understands the difference between the two, or at least did back when he wrote his autobiography:
“I am angry that so many of the sons of the powerful and well-placed… managed to wangle slots in Reserve and National Guard units…Of the many tragedies of Vietnam, this raw class discrimination strikes me as the most damaging to the ideal that all Americans are created equal and owe equal allegiance to their country.”