McDowell
Lincoln fired McClellan twice.
Abraham Lincoln as commander in chief, sent union troops to the South.
The commander I think you are talking about is Ulysses S. Grant
The first commander of the Union troops during the American Civil War was Brigadier General Irvin McDowell. He led the Union forces at the First Battle of Bull Run (also known as First Manassas) in July 1861. McDowell's command faced significant challenges, and after the Union defeat in that battle, he was eventually replaced by General George B. McClellan.
Ulysses S. Grant
No, the Confederate troops fired the first shots in the Civil War during the attack on Fort Sumter, South Carolina on April 12, 1861. The Union troops stationed at the fort returned fire in self-defense.
Fort Sumter - an island garrison in Charleston Harbour, held by Union troops, and fired-on by Confederate artillery, on the orders of General P.G.T. Beauregard.
Confederates. Stonewall Jackson led a wild charge that took the Union troops completely off-guard.
First action of the Civil War was on April 12, 1861, when Confederate troops fired upon Fort Sumter , fort held by Union troops in South Carolina
Winfield Scott Henry Halleck Ulysses S. Grant
Fort Sumter - a tiny US Army garrison on an island in Charleston harbour. When the Confederate artillery fired on the fort, Lincoln called for volunteer troops for the Union, and the war was on.
George McClellan