Celebrate Our Anniversary with Trivia!
Join us on August 23 for a free virtual trivia party featuring questions about ancient civilizations, U.S. history, unusual historical facts, pop culture, and more.
Brigadier General Irvin McDowell, Commander of Union forces at the the First Battle of Bull Run (First Manassas) on 21 July 1861. Photograph most likely by Mathew Brady, 1860.
Library of Congress
License & Copyright
Based on Wikipedia content that has been reviewed, edited, and republished. Original image by Mathew Brady. Uploaded by Joshua J. Mark, published on 11 August 2026. The copyright holder has published this content under the following license: Public Domain. This item is in the public domain, and can be used, copied, and modified without any restrictions. Please note that content linked from this page may have different licensing terms.
Related Images
First Battle of Bull Run (First Manassas), 21 July 1861
Brigadier General James Winchester
Brigadier-General Reginald Dyer
Map of the American Civil War, 1861-1865
Injured American Civil War Soldier
American Civil War Leg Prosthesis
Cite This Work
APA Style
Brady, M. (2026, August 11). Brigadier General Irvin McDowell: Commander of Union Forces at First Battle of Bull Run. World History Encyclopedia. https://www.worldhistory.org/image/21981/brigadier-general-irvin-mcdowell/
Chicago Style
Brady, Mathew. "Brigadier General Irvin McDowell: Commander of Union Forces at First Battle of Bull Run." World History Encyclopedia, August 11, 2026. https://www.worldhistory.org/image/21981/brigadier-general-irvin-mcdowell/.
MLA Style
Brady, Mathew. "Brigadier General Irvin McDowell: Commander of Union Forces at First Battle of Bull Run." World History Encyclopedia, 11 Aug 2026, https://www.worldhistory.org/image/21981/brigadier-general-irvin-mcdowell/.
