But it was not alone through her plan of the Tennessee campaign that Miss Carroll exhibited her military genius; throughout the conflict she continued to send plans and suggestions to the War Department. The events of history prove the wisdom of those plans, and that had they been strictly followed, the war would have been brought to a speedy close,[7] and millions of men and money saved to the country. Upon the fall of Fort Henry, February, 1862, she again addressed the War Department, advising an immediate advance upon Mobile or Vicksburg. In March, 1862, she presented a memorial and maps to Secretary Stanton in person, in regard to the reduction of Island 10, which had long been a vain effort by the Union forces, in which she said: The failure to take Island 10, which thus far occasions much disappointment to the country, excites no surprise to me. When I looked at the gun-boats at St. Louis, and was informed as to their powers, and that the current of the Mississippi at full tide runs at the rate of five miles per hour, which is very near the speed of our gun-boats, I could not resist the conclusion that they were not well fitted to the taking of batteries on the Mississippi River, if assisted by gun-boats perhaps equal to our own. Hence it was that I wrote Col. Scott from there, that the Tennessee River was our strategic point, and the successes at Forts Henry and Donelson establish the justice of these observations. Had our victorious army, after the fall of Fort Henry, immediately pushed up the Tennessee River and taken position on the Memphis and Charleston Railroad, between Corinth, Miss., and Decatur, Ala., which might easily have been done at that time with a small force, every rebel soldier in Western Kentucky and Tennessee would have fled from every position south of that railroad. And had Buell pursued the enemy in his retreat from Nashville, without delay, into a commanding position in North Alabama, on the railroad between Chattanooga and Decatur, the rebel government at Richmond would necessarily have been obliged to retreat to the cotton States. I am fully satisfied that the true policy of General Halleck is to strengthen Grant's column by such a force as will enable him at once to seize the Memphis and Charleston Railroad, as it is the readiest means of reducing Island 10, and all the strongholds to Memphis. In October, 1862, observing the preparations for a naval attack upon Vicksburg, Miss Carroll again addressed the Secretary of War in the following memorial: