If the attack of a parasite is met by the formation of some substance in the protoplasm which is chemo- tactically repulsive to the invader, it may be totally incapable of penetrating the cell, even though equipped with a whole armoury of cytases, diastatic and other enzymes, and poisons which would easily overcome the more passive resistances offered by mere cell-walls and cell-contents of other plants, the protoplasm of which forms bodies chemotactically attractive to the Fungus.
But locally and tactically, no real success was obtained by the new arm after the departure of U21.
Tactically the Confederates were almost always victorious, strategically, Grant, disposing of greatly superior forces, pressed back Lee and the Army of Northern Virginia to the lines of Richmond and Petersburg, while above all, in pursuance of his explicit policy of " attrition," the Federal leader used his men with a merciless energy that has few, if any, parallels in modern history.
On the 8th of October Buell and Bragg fought an engagement at Perryville which, though tactically indecisive, was a strategic victory for Buell; and thereafter Bragg withdrew entirely from the state into Tennessee.
At Kernstown, indeed, Jackson was tactically defeated by the Federals under Shields (March 23, 1862).
The British, by holding their ground with their accustomed tenacity when engaged with superior numbers, were tactically victors, but were further weakened by a loss of nearly 600 men.
Thus the allies drew off unharmed, leaving no `rophies in the hands of Napoleon, whose success, tactically unquestionable, was, for a variety of reasons, and above all owing to the want of cavalry, a coup manqué strategically.
Tactically a drawn battle, Stone River was strategically a Union victory.