The most sensitive, and in many ways the most crucial areas, along the Mississippi River and in western Tennessee along the Tennessee River and the Cumberland River were placed under the command of Maj. Gen. Leonidas Polk and Brig.

Of these, 10, 000 were in Missouri under Missouri State Guard Maj. Gen. Sterling Price.

Eastern Tennessee was held for the Confederacy by two unimpressive brigadier generals appointed by Jefferson Davis, Felix Zollicoffer, a brave but untrained and inexperienced officer, and soon to be Maj. Gen. George B. Crittenden, a former U. S. Army officer with apparent alcohol problems.

Maj. Gen. Polk ignored the problems of Fort Henry and Fort Donelson when he took command and, after Johnston took command, at first refused to comply with Johnston's order to send an engineer, Lt. Joseph K. Dixon, to inspect the forts.

Johnston kept the Union forces, now under the overall command of the ponderous Maj. Gen. Henry Halleck, confused and hesitant to move, allowing Johnston to reach his objective undetected.

Johnston now planned to defeat the Union forces piecemeal before the various Union units in Kentucky and Tennessee under Grant with 40, 000 men at nearby Pittsburg Landing, Tennessee, and the now Maj. Gen. Don Carlos Buell on his way from Nashville with 35, 000 men, could unite against him.

* Maj .- Gen. Tajeddin Mehdiyev ( December 1991-January 1992 )

* Maj .- Gen. Dadash Rzayev ( February – June 1993 )

Gettysburg was his finest hour, but his relief by Maj. Gen. George G. Meade caused lasting enmity between the two men.

On July 2, 1863, Army of the Potomac commander Maj. Gen. George G. Meade replaced Doubleday with Maj. Gen. John Newton, a more junior officer from another corps.

Union Maj. Gen. George Gordon Meade's Army of the Potomac defeated attacks by Confederate Gen. Robert E. Lee's Army of Northern Virginia, ending Lee's invasion of the North.

Only Maj. Gen. George H. Thomas and the XIV corps kept the Army of the Cumberland from complete defeat at the Battle of Chickamauga.

Maj. Gen. Sherman would attack Atlanta and Georgia, while the Army of the Potomac, led by Maj. Gen. George Meade with Grant in camp, would attack Robert E. Lee's Army of Virginia.

Robert Dinwiddie commissions 21-year-old militia Maj. George Washington to dissuade the French from occupying the Ohio Country.

Union cavalry under Maj. Gen. George Stoneman began a long distance raid against Lee's supply lines at about the same time.

Maj. Gen. George B. McClellan's Peninsula Campaign took an amphibious approach, landing his Army of the Potomac on the Virginia Peninsula in the spring of 1862 and coming within of Richmond before being turned back by Gen. Robert E. Lee in the Seven Days Battles.

And on November 5, seeing that his replacement of Buell had not stimulated Maj. Gen. George B. McClellan into action, he issued orders to replace McClellan in command of the Army of the Potomac in Virginia.

Gen. George W. Getty's division ( VI Corps ) and Maj. Gen. Winfield S. Hancock's II Corps on the Orange Plank Road.

They consisted of the Army of the Potomac, under Maj. Gen. George G. Meade, and the IX Corps ( until May 24 formally part of the Army of the Ohio, reporting directly to Grant, not Meade ).

He chose to make his headquarters with the Army of the Potomac, although Maj. Gen. George G. Meade remained the actual commander of that army.

They consisted of the Army of the Potomac, under Maj. Gen. George G. Meade, and the IX Corps ( until May 24 formally part of the Army of the Ohio, reporting directly to Grant, not Meade ).

He executed well as a rear guard commander at Yorktown and Williamsburg, delaying the advance of Union Maj. Gen. George B. McClellan's army toward Richmond.

Longstreet's First Corps gave up the division of Maj. Gen. Richard H. Anderson during the reorganization, leaving him with the divisions of Lafayette McLaws, George Pickett, and John Hood.

Meeting with Lee, Longstreet was concerned about the strength of the Union defensive position and advocated a strategic movement around the left flank of the enemy, to " secure good ground between him and his capital ," which would presumably compel the Union commander, Maj. Gen. George G. Meade, to attack defensive positions erected by the Confederates.

Maj. Gen. George H. Thomas managed to rally the retreating units and solidify a defensive position on Snodgrass Hill.

After pursuing Confederate General Robert E. Lee into Maryland, Union Army Maj. Gen. George B. McClellan launched attacks against Lee's army, in defensive positions behind Antietam Creek.

Maj. Gen. George B. McClellan, commander of the Army of the Potomac, termed it a " very gallant affair ", congratulated Custer personally, and brought him onto his staff as an aide-de-camp with the temporary rank of captain.

Patriotic cover honoring the arrival of Maj. Gen. George B. McClellan in Washington, D. C., on July 26, 1861.

He was assigned command of the 2nd Brigade of the Pennsylvania Reserves, recruited early in the war, which he led competently, initially in the construction of defenses around Washington, D. C. His brigade joined Maj. Gen. George B. McClellan's Army of the Potomac for the Peninsula Campaign.

When Maj. Gen. George B. McClellan entered upon his Peninsula Campaign in spring 1862, the important duty of keeping the Confederate forces of Stonewall Jackson in the Shenandoah Valley from reinforcing the defenses of Richmond fell to the two divisions commanded by Banks.

** ( formerly SS Maj. Stephen W. Pless, SS Charles Carroll )

Wood in the Siege of Corinth, where he assisted in the pursuit of Confederates in retreat by the overly-cautious Maj. Gen. Henry W. Halleck, which resulted in the escape of Gen. P. G. T. Beauregard and his troops.

Grant's superior, Maj. Gen. Henry W. Halleck, was concerned about Confederate reinforcements retaking the forts, so Grant left Wallace with his brigade in command at Fort Henry while the rest of the army moved overland toward Fort Donelson.

In December, he was put on leave by Maj. Gen. Henry W. Halleck, commander of the Department of the Missouri, who considered him unfit for duty.

In response to prodding from Lincoln and general-in-chief Maj. Gen. Henry W. Halleck, Burnside planned a late fall offensive ; he communicated his plan to Halleck on November 9.

* First Corps, under Lt. Gen. James Longstreet, including the divisions of Maj. Gen. Charles W. Field and Brig.

* First Corps, under Maj. Gen. Richard H. Anderson, including the divisions of Maj. Gen. Charles W. Field and Brig.

* Second Corps-commanded by Maj. Gen. G. W. Smith

* Maj. Gen Benjamin W. S.

Grant was temporarily disgraced by the surprise attack and near defeat, causing his superior, Maj. Gen. Henry W. Halleck, to assume field command of the combined armies.

Col. Charles W. Blair, the commander of Fort Scott, temporarily replaced the commander of the post at Humboldt, Maj. Henry C. Haas, to keep the soldiers there from illegally voting in the county seat election.

The First and Second Maryland Cavalry, led by Baltimore County native and pre-war member of the Towson Horse Guards, Maj. Harry W. Gilmor, attacked strategic targets throughout Baltimore and Harford counties, including cutting telegraph wires along Harford Road, capturing two trains and a Union General, and destroying a railroad bridge in Joppa, Maryland.

Though Lt. J. W. Kittredge attempted the expropriation of Corpus Christi from the Southern forces, Maj. Alfred M. Hobby and troops sent the Union ships sailing away.

In early March, Union Maj. Gen. Henry W. Halleck, then commander of the Department of the Missouri, responded by ordering Grant to advance his Army of West Tennessee ( soon to be known by its more famous name, the Army of the Tennessee ) on an invasion up the Tennessee River.

Several of his subordinate generals, including Couch and Maj. Gen. Henry W. Slocum, openly questioned Hooker's command decisions.

The victor at Shiloh, Maj. Gen. Ulysses S. Grant, came under severe criticism for the bloody battle and his superior, Maj. Gen. Henry W. Halleck, reorganized his Department of the Mississippi to ease Grant out of direct field command.

The right front division, under Maj. Gen. Samuel W. Crawford, was to strike at an angle near the end of the enemy's works, and the left front, under Maj. Gen. Romeyn B. Ayres, was to strike the line head-on.

General-in-chief Maj. Gen. Henry W. Halleck and President Abraham Lincoln were insistent that Rosecrans move quickly to take Chattanooga.

Gen. Richard W. Johnson, and Maj. Gen. Philip H. Sheridan.

On the way to his new post, he made a courtesy call to Maj. Gen. Henry W. Halleck in St. Louis, who commandeered his services to audit the financial records of his immediate predecessor, Maj. Gen. John C. Frémont, whose administration of the Department of the Missouri was tainted by charges of wasteful expenditures and fraud that left the status of $ 12 million in doubt.