John C. Walker was a physician and prominent Democrat

Democratic Party (United States)

The Democratic Party is one of two major contemporary political parties in the United States, along with the Republican Party. The party's socially liberal and progressive platform is largely considered center-left in the U.S. political spectrum. The party has the lengthiest record of continuous...

 political figure in Indianapolis, Indiana

Indianapolis, Indiana

Indianapolis is the capital of the U.S. state of Indiana, and the county seat of Marion County, Indiana. As of the 2010 United States Census, the city's population is 839,489. It is by far Indiana's largest city and, as of the 2010 U.S...

 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...

. In 1861, he was commissioned 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...

 in command of the 35th Regiment Indiana Infantry

35th Regiment Indiana Infantry

- History :The 35th Regiment Indiana Infantry was organized on December 11, 1861 during the American Civil War, and mustered out October 23, 1865...

 ("First Irish"). Disagreements with his superiors, including Governor Morton

Oliver Hazard Perry Morton

Oliver Hazard Perry Throck Morton , commonly known as Oliver P. Morton, was a U.S. Republican Party politician from Indiana. He served as the 14th Governor of Indiana during the American Civil War, and was a stalwart ally of President Abraham Lincoln. During the war, Morton suppressed the...

, led to his removal from command and an order for his arrest. He was returned to Indiana on an excuse of medical infirmity. He later participated in Copperhead

Copperheads (politics)

The Copperheads were a vocal group of Democrats in the Northern United States who opposed the American Civil War, wanting an immediate peace settlement with the Confederates. Republicans started calling anti-war Democrats "Copperheads," likening them to the venomous snake...

 activity in Indiana, the discovery of which forced him to flee to the United Kingdom

United Kingdom

The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

for the duration of the war. He returned after hostilities had ceased and resumed practice as a physician.