ARMY ORGANIZATION n.
iers organized largely for territorial defense, living at home and having only occasional periods of drill and instraction, who are variously called home reserves (as in the table below), second, third, etc., line of defense (the regular army and its reserves ordinarily constituting the first line of defense), territor…
ASTRONOMY n.
he science which treats of the celestial bodies, of their magnitudes, motions, distances, periods of revolution, eclipses, constitution, physical condition, and of the causes of their various phenomena.