A brigadier general is a one-star general. There are several brigadier generals in the U.S. Army.

brigadier is superior

A Brigadier General commands a brigade.

It is just Brigadier, not Brigadier General.

In the American Civil War's Battle of Gettysburg, the key leaders at the top level for each side were the following: On the Union side, Major General George Meade was the top commander, with a variety of capable lower-ranking officers in positions of influence during the battle. On the Confederate side, General Robert E. Lee was the top commander. Several of his corps commanders should also be mentioned, as they had important (and generally negative, as the results would show) influence on the battle: Lt. General James Longstreet and Lt. General Richard S. Ewell.