During operations Desert Shield and Desert Storm, Soriano served as the chief of the liaison team to the 1st Marine Expeditionary Force. After the conflict ended, Soriano contributed to the Secretary of Defense's Gulf War Report as the chief of the army section while serving in the Office of the Chief of Staff. In 1992, Soriano received his first assignment at Fort Carson, Colorado, as the commander of the 1st Brigade, 4th Infantry Division. Following this command, Soriano returned to Germany to serve with the 3d and 1st Infantry Divisions, which included deployments to Bosnia for peacekeeping during Operation Joint Endeavor. Returning to the United States, he undertook various positions in Virginia and The Pentagon, including service as Director, Officer Personnel Management, within the Total Army Personnel Command. From 1999 to 2001, Soriano commanded the 7th Infantry Division and Fort Carson. Soriano served as Director of Homeland Security for United States Joint Forces Command from October 2001 to August 2002, which laid the foundations for what has become the Northern Command.