Final answer:
Major General Joseph Hoker led the Union troops in the Battle of Chancellorsville, which resulted in a Confederate victory.
Step-by-step explanation:
The Union troops in the Battle of Chancellorsville were led by Major General Joseph Hoker. The battle took place from April 30 to May 6, 1863, in Spotsylvania County, Virginia.
The outcome of the battle was a Confederates victory. Despite having a larger army, Hoker failed to effectively use his forces and was outmaneuvered by General Robert E. Lee. The army successfully divided their forces and launched a surprise attack, forcing the Union troops to retreat.
As a result of the battle, the Union suffered heavy casualties, including over 17,000 soldiers killed, wounded, or missing. The Confederates, on the other hand, suffered fewer casualties but lost their revered General Stonewall Jackson, who was mistakenly shot by his own men during the confusion of battle.