because he didn't like him for shooting Lincoln.
He shot him because he thought he was about to use his weapons and was protecting him and his fellow soldiers. He also said that "providence called him" Boston was brave and had a lot of dignity in his job.
Alternate answer by Troy Cowan
Many don't believe Boston Corbett shot the man in the Garrett barn including the commander of the detachment, Lt. Edward Doherty. Also, many don't believe John Wilkes Booth was the man killed in the barn. There is substantial evidence that Booth died in 1903.
If Boston Corbett did not kill the man in the barn, who did and why?
The man killed in the barn was James William Boyd. The Secretary of War assigned Boyd to kill Lincoln. When he did not do it and fled the city, he needed to be found and killed. Stanton wanted him silenced forever. When Colonel Conger discovered that Boyd was the man in the barn, he shot Boyd and blamed it on Corbett. When Corbett discovered he was being treated as a hero and after he received part of the reward money, he willing went along.
Unfortunately, few historians accept this explanation. They need proof. The masterminds behind Lincoln's assassination got away with the crime. There will never be any proof of their involvement.
After he killed Lincoln, John Wilkes Booth became the subject of the greatest manhunt in American history. Troops caught up with him not long after the assassination, and he himself was shot and killed in a Virginia tobacco barn.
Boston Corbett was born in 1832.
Boston Corbett's birth name is Thomas P. Corbett.
At, Garrett Farm
The FBI investigated the assassination in 1963. The Warren Commission investigated the assassination in 1964. The Senate Select Committee on Assassinations investigated the assassination in 1975.
Once, by a NY Cavalry Sergeant named Boston Corbett
Abraham Rogatnick was born on November 27, 1923, in Boston, Massachusetts, USA.
As per common tradition Booth was killed by Cavalry Sergeant Corbett, but the Historian O. Eisenschmiel, basing himself on solid arguments, claimed that he was shot to dead by Lieutenant Colonel Conger of the Secret Service.
He lives near boston. He lives in a town called Lincoln.
Abraham Lincoln was assassinated by John Wilkes Booth, a promising actor and Confederate sympathizer. After Booth shot Lincoln at Ford's Theater, he ran from the Theater and fled south with accomplice David Herold. The two made a quick stop at the house of Dr. Samuel Mudd, who set Booth's leg (Booth broke it when he jumped from the president's box to the stage at Ford's Theater). Then they hid in a pine thicket for nearly a week. Eventually detectives caught up with them at Garrett's Farm in the South. Booth and Herold were hiding in the barn when detectives surrounded it. Herold surrendered, but Booth refused. The detectives set the barn on fire, and then Booth was shot by the soldier Boston Corbett. He was taken out of the barn and suffered for a while, but eventually died. It was twelve days after he shot Lincoln.
Boston Legal - 2004 Lincoln 3-8 is rated/received certificates of: Argentina:13
Abraham Paul Sarkis was born on October 23, 1967, in Boston, Massachusetts, USA.