"...The militia of the United States consists of all able-bodied males at least 17 years of age and, except as provided in section 313 of title 32, under 45 years of age who are, or who have made a declaration of intention to become, citizens of the United States and of female citizens of the United States who are members of the National Guard." (https://www.law.cornell.edu/uscode/text/10/311)
What the Constitution actually says and what the drafters intended are irrelevant. The Constitution now says whatever the hell 5 out of 8 Supreme Court Justices currently want it to say,