“Finally, … ‘well-regulated’ implies nothing more than the imposition of proper discipline and training. See Johnson 1619 (‘Regulate’: ‘To adjust by rule or method’); Rawle 121–122; cf. Va. Declaration of Rights §13 (1776), in 7 Thorpe 3812, 3814 (referring to ‘a wellregulated militia, composed of the body of the people, 24 DISTRICT OF COLUMBIA v. HELLER Opinion of the Court trained to arms’).”
From District of Columbia v. Heller (No. 07-290)