Philip Henson was a scout

Reconnaissance

Reconnaissance is the military term for exploring beyond the area occupied by friendly forces to gain information about enemy forces or features of the environment....

 and spy

SPY

SPY is a three-letter acronym that may refer to:* SPY , ticker symbol for Standard & Poor's Depositary Receipts* SPY , a satirical monthly, trademarked all-caps* SPY , airport code for San Pédro, Côte d'Ivoire...

 for 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...

. Upon the election of U.S. Grant to the U.S. Presidency (1869–1877), Henson became the first Special Secret Service Agent of the United States of America, serving until Grant's death in 1885. During the course of his life and careers, Phillip Henson would interact with such famous 19th century persons as abolitionist John Brown

John Brown (abolitionist)

John Brown was an American revolutionary abolitionist, who in the 1850s advocated and practiced armed insurrection as a means to abolish slavery in the United States. He led the Pottawatomie Massacre during which five men were killed, in 1856 in Bleeding Kansas, and made his name in the...

, Cherokee Chiefs John Ross

John Ross (Cherokee chief)

John Ross , also known as Guwisguwi , was Principal Chief of the Cherokee Native American Nation from 1828–1866...

 a.k.a Kooweskoowe and Stand Watie

Stand Watie

Stand Watie , also known as Standhope Uwatie, Degataga , meaning “stand firm”), and Isaac S. Watie, was a leader of the Cherokee Nation and a brigadier general of the Confederate States Army during the American Civil War...

 a.k.a Degataga, Tennessee and Texas Governor Sam Houston

Sam Houston

Samuel Houston, known as Sam Houston , was a 19th-century American statesman, politician, and soldier. He was born in Timber Ridge in the Shenandoah Valley of Virginia, of Scots-Irish descent. Houston became a key figure in the history of Texas and was elected as the first and third President of...

, actor John Wilkes Booth

John Wilkes Booth

John Wilkes Booth was an American stage actor who assassinated President Abraham Lincoln at Ford's Theatre, in Washington, D.C., on April 14, 1865. Booth was a member of the prominent 19th century Booth theatrical family from Maryland and, by the 1860s, was a well-known actor...

, Confederate Postmaster General John Henninger Reagan

John Henninger Reagan

John Henninger Reagan , was a leading 19th century American politician from the U.S. state of Texas. A Democrat, Reagan resigned from the U.S. House of Representatives when Texas seceded from the Union and joined the Confederate States of America. He served in the cabinet of Jefferson Davis as...

, Confederate Secretary of State Judah Philip Benjamin, U.S.