The use of the cavalry in "raids," which were the fashion, was an amusement that was very costly to both sides. Since Stuart's ride round McClellan's army in 1862, every cavalry commander, National and Confederate, burned to distinguish himself by some such excursion deep into the enemy's country, and chafed at the comparatively obscured but useful work of learning the detailed positions and movements of the opposing army by incessant outpost and patrol work in the more restricted theatre of operations of the campaign. From Chattanooga to the Chattahoochee, good work was done by Stoneman and McCook in scouting upon the front and flanks of the army, and by Colonel Lowe in vigilant guard of the railway close in rear of Sherman's movements; but the use of mounted troops in mass was not satisfactory, and as to the raids on both sides, the game was never worth the candle. Men and horses were used up, wholesale, without doing any permanent damage to the enemy, and never reached that training of horse and man which might have been secured by steady and systematic attention to their proper duties. Forrest, of the Confederates, was the only cavalry officer whom Sherman thought at all formidable, and he showed his high estimate of him by offering, in his sweeping way, to secure the promotion of the officer who should defeat and kill him. In another form he expressed the same idea, by saying he would swap all the cavalry officers he had for Forrest. [Footnote: The matter took an odd turn, when on the report that General Mower had defeated Forrest in West Tennessee and that the brilliant cavalry leader had fallen in the action, Mower got his promotion, but it turned out that it was Forrest's brother, a colonel, who was killed--"a horse of another color." Mower, however, was worthy of promotion "on general principles." See Official Records, vol. xxxviii. pt. v. p. 471; vol. xxxix. pt. i. p. 228; _Id_., pt. ii. pp. 130, 142, 219, 233.]