2005
T. R. Fehrenback Award, Texas Historical Commission, for Civil War and Revolution on the Rio Grande
2005
Kate Broocks Bates Award, Texas State Historical Association, for Civil War and Revolution on the Rio Grande
2004
Scholar of the Year, College of Arts and Sciences, Texas A&M International University
2002
Gaspar Perez de Villagra Award, Historical Society of New Mexico, for Civil War in the Southwest (Outstanding publication by an individual)
2001
Regents Professor, Texas A&M University System Board of Regents
2000
Barry Goldwater Award, Arizona Historical Society.
2000
General Editor, Canseco-Keck Series ( Texas and Civil War), Texas A&M University Press.
1999
Finalist, Spur Award ( short notification), Western Writers of America.
1999
Second Vice President, Texas State Historical Association .
1999
Citation, A Wild and Vivid Land: An Illustrated History of South Texas Border, San Antonio Conservation Society.
1999
Jim Parish Award for Documentation and Publication of Local and Regional History, Webb County Heritage Foundation.
1997
Finalist,Spur Award (Biography), Western Writers of America.
1996
Editorial Advisory Board, Southwestern Historical Quarterly1995 -99
Editorial Advisory Board, Journal of Arizona History1995-1999
Executive Committee, Texas State Historical Association1992
Fellow, Texas State Historical Association1992
Historical Marker Award, Webb County Heritage Foundation1991
Documentation and Publication Award, Webb County Heritage Foundation1991
Meritorious Service Award, Laredo Chamber of Commerce1990
Historical Marker Award, Webb County Heritage Foundation1990
Distinguished Publication Award, Webb County Heritage Foundation1989
Piper Professor1988
Earl Davis Award, Hill College, Contributions to Civil War Literature1986
Sesquicentennial Award for Series of Articles on Nineteenth Century Border Politics, Laredo News1985
Distinguished Service Award for Contributions to Regional Literature, Webb County Heritage Foundation1984
Distinguished Publication Award, Zapata County Historical Commission1981-82
President, Faculty Senate, Laredo Junior College1981
Valley Forge Honor Medal1975-87
Associate Editor, Military History of Texas and the Southwest1977-78
President, Faculty Senate, Laredo Junior College1975
Minnie Stevens Piper Nominee, Laredo Junior College1975
La Bahia Award, Second Place, Sabers on the Rio Grande1971-73
Director, South Texas Oral History Program, (Texas A&I University, Pan American University, Texas Southmost College, Southwest Texas Junior College, and Laredo Junior College)1970-71
President, Faculty Senate, Laredo Junior College1969-70
Vice President, Faculty Senate, Laredo Junior College