The 25th Regiment Illinois Volunteer Infantry was an infantry

Infantry

Infantrymen are soldiers who are specifically trained for the role of fighting on foot to engage the enemy face to face and have historically borne the brunt of the casualties of combat in wars. As the oldest branch of combat arms, they are the backbone of armies...

 regiment

Regiment

A regiment is a major tactical military unit, composed of variable numbers of batteries, squadrons or battalions, commanded by a colonel or lieutenant colonel...

 that served in the Union Army

Union Army

The Union Army was the land force that fought for the Union during the American Civil War. It was also known as the Federal Army, the U.S. Army, the Northern Army and the National Army...

 during the American Civil War

American Civil War

The American Civil War was a civil war fought in the United States of America. In response to the election of Abraham Lincoln as President of the United States, 11 southern slave states declared their secession from the United States and formed the Confederate States of America ; the other 25...

.

Service

The 25th Illinois Infantry was organized at Saint Louis, Missouri and mustered into Federal service on August 4, 1861.

The regiment was mustered out on September 5, 1864.

Total strength and casualties

The regiment suffered 3 officers and 80 enlisted men who were killed in action or who died of their wounds and 148 enlisted men who died of disease, for a total of 232 fatalities.

Commanders

• Colonel
  Colonel
  Colonel , abbreviated Col or COL, is a military rank of a senior commissioned officer. It or a corresponding rank exists in most armies and in many air forces; the naval equivalent rank is generally "Captain". It is also used in some police forces and other paramilitary rank structures...
  
   William N. Coler - resigned on August 31, 1862.
• Colonel Caswell P. Ford - resigned on April 14, 1863.
• Colonel Thomas D. Williams - killed in action on December 31, 1862.
• Colonel Richard H. Nodine - mustered out with the regiment.
• Colonel William E. Woodruff
  William E. Woodruff
  William Woodruff is a historian.William Woodruff is also the name of:*William E. Woodruff , early American journalist, politician, and pioneer of Arkansas*William E...