Confederate General Jackson's victory at the Battle of Winchester in May of 1862 posed a serious tactical problem for Union forces. The Union wished to deploy troops from the Shenandoah Valley to aid the army of Major General George B. McClellan on his drive towards Richmond. The problem was as long as Jackson's forces remained a danger to the Union, and no one could halt his progress, such a move to leave the Valley was not practical.
The Union army at the Battle of the Wilderness saw 100,000 Union troops battle 60,000 Confederate troops. Unfavorable terrain helped prevent Grant's forces advance and Confederate General Longstreet prevented a breakthrough of Federal forces on the southern end of the field of battle. Additionally, it was only due to nightfall that the Union's northern flank survived. Union losses were 17,600, and Rebel losses were 11,000. The South's ability to withstand the overwhelming Union forces was a tactical success.
the union forces defeated the confederate forces
The tactical plan of battle that General McDowell planned to use at the first Battle of Bull Run was one called a "turning" maneuver. The idea was to use part of his forces in an attempt to outflank the Confederate forces. This plan was approved by General Winfield Scott.
The Union forces
The Confederate forces defeated the Union forces.
The Union Forces won the Battle of Franklin.
the union forces won the battle of Shiloh
Union forces won the Battle of Shiloh thanks to reinforcements from Grant and Buell's army. Their arrival turned the battle and forced the Confederates to retreat.
The First Battle of Bull Run.
They didn't. The battle was a draw, but Lee won a tactical victory when Grant took his army away to the southeast.
Outnumbered better than 2-1, he split his forces and had Jackson make a surprise flank attack on the Union right, and drove the larger Union force across the river in defeat.
The First Battle of Bull Run.