The Confederate Army had its own approximate of the Regular Army, this known as the "Army of the Confederate States of America" or the "ACSA". The ACSA was considered the professional military while, as in the Union Army, the Confederacy mustered massive numbers of state volunteers into the "Provisional Army of the Confederate States" or the "PACS". Nearly all Confederate enlisted personnel were PACS while most senior general officers held dual commissions in the ACSA and PACS. Thomas "Stonewall" Jackson, for instance, was a lieutenant general in the PACS while holding the permanent rank of major of artillery in the ACSA. The ACSA concept was also used to ensure that none of the senior Confederate officers could ever be outranked by militia officers, considered subordinate to the PACS.