'Strategic line' definitions:

Definition of 'Strategic line'

From: GCIDE

Strategic \Stra*te"gic\, Strategical \Stra*te"gic*al\, a. [Gr. ? of or for a general: cf. F. strat['e]gique.] Of or pertaining to strategy; effected by artifice. -- {Stra*te"gic*al*ly}, adv. [1913 Webster]
Strategic line (Mil.), a line joining strategic points.
Strategic point (Mil.), any point or region in the theater or warlike operations which affords to its possessor an advantage over his opponent, as a mountain pass, a junction of rivers or roads, a fortress, etc. [1913 Webster]