Another thing that changed very little in the years between the wars was the means of obtaining military intelligence. Although the use of photography and the telegraph brought some technological advances, the craft of spying on the enemy's army still relied on fieldwork. For the most part, intelligence was gathered in simple ways. Prisoners of war and deserters were interrogated. The Union army was always interested in hearing what runaway slaves had to report. —The Dark Game, Paul Janeczko What is the central idea of the paragraph?

Military intelligence is a military discipline that uses information collection and analysis to provide guidance and assistance. The Main role is to provide the accurate range of data in form of sources , mission requirements , planning and many other things related to missions.

Area of Study includes many things like :

Operational environment
Hostile
Friendly Forces

Intelligence is concerned with board of issues such as economics, political assessments, military capability . A great deal of useful intelligence can be gathered detailed high-altitude pictures of a country. Photointerpreters generally maintain catalogs of munitions factories, military bases and crate designs in order to interpret munition shipments and inventories.

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