Also, as we are masters of Ulm, we cannot be deprived of the advantage of commanding both sides of the Danube, so that should the enemy not cross the Lech, we can cross the Danube, throw ourselves on his line of communications
, recross the river lower down, and frustrate his intention should he try to direct his whole force against our faithful ally.
The line of communication between Los Angeles and Lower California had broken down.
When he returned, the line of communication was reestablished, and Juan Alvarado was dead.
The reports published by them of their expedition demonstrated the practicability of establishing a line of communication
across the continent, from the Atlantic to the Pacific Ocean.
It would flutter and live till the last line of communication
was broken, and after that who was to say how much longer it might continue to flutter and live?
The rude path, which originally formed their line of communication
, had been widened for the passage of wagons; so that the distance which had been traveled by the son of the forest in two hours, might easily be effected by a detachment of troops, with their necessary baggage, between the rising and setting of a summer sun.
In short, if the enemy is there, it would be madness to attack him in front; he must be maneuvered out by the immemorial plan of threatening his line of communication
, as necessary to his existence as to the diver at the bottom of the sea his air-tube.