Stormtrooper Command was a staff of senior officers within the Stormtrooper Corps. They were the highest authority of the Corps, headquartered on Coruscant and later Bastion. The Command was directly in charge of the Corps, and was responsible for ordering and approving operations, troop movements, and garrison management. It was led by one Grand General appointed by Emperor Palpatine, who served as the Chief of Staff. Since 16 BBY, it was Igor Kozhin.
In 2 BBY, after the revolts on Felucia by the Felucian Defense Forces, they worked together with the Imperial Army's Army Command and the Imperial Navy's Naval Command to station a large garrison on the planet to prevent further dissent.
Throughout the Galactic Civil War, it commanded stormtrooper forces in carrying out operations against the Alliance to Restore the Republic. After the Battle of Endor, it was fragmented among various warlords until being reunified under the Imperial Remnant. Around 128 ABY, the Corps was merged with the Imperial Army, so Command became part of Army Command. In 131 ABY, Darth Krayt, establishing his own empire, dissolved what remained of it. That caused many to defect to the Empire-in-exile.