Read this paragraph from The Dark Game.
What is the best summary of this paragraph?
Another thing that changed very little in the years
between the wars was the means of obtaining military
During the Civil War, intelligence was gathered in
intelligence. Although the use of photography and the
the same ways it had been gathered in previous
wars.
telegraph brought some technological advances, the
craft of spying on the enemy's army still relied on
O Photography and the telegraph were some of the
ieldwork. For the most part, intelligence was gathered
technological advances that
were used in Civil War
simple ways. Prisoners of war and deserters were
espionage.
nterrogated. The Union army was
always interested in
Most espionage during the Civil War was fieldwork
earing what runaway slaves had to report. And, of
that included observation, scouting, and interrogatio
ourse, both armies relied on cavalry scouts, signal
of prisoners.
tercepts, visual observation, and captured
Enslaved persons that ran away, as well as
orrespondence.
prisoners from the Union Army, were good sources
of information during the Civil War.