World War I and the origins of U.S. military intelligence

Steps to war

The Signal Corps

The war in Europe

Captains

Small steps by the Signal Corps

The first shots in the intelligence war

An early test south of the border

America enters the war

Military Intelligence Section

The bigger picture

A counterintelligence problem

District of Columbia

Corps of Intelligence Police

Countersubversion

The civilian sector

The advent of Yardley

Reports and more reports

Censorship

An interim judgment

Intelligence and the AEF

The Information Division

A downed airship

Secret Service Division

Topography Division

Censorship Division

New Year's Eve

Securing the home front

Organizing counterintelligence

Counterintelligence in action

Intelligence gathering

Secret inks

More reports

Finishing the course

Propaganda

Attachés

Code making

Negative branch

The final report

Tested under fire

Intelligence in the field

Intelligence within Division

The Corps

Army headquarters

GHQ: filling the void

Stars and stripes

Combat artists

Securing the force

Making the airwaves secure

Course of the war

Coming to a close

First Army

Arrival of Van Deman

St. Mihiel

Meuse-Argonne

Security

The use of intelligence

Peace talks

Final evaluation

The aftermath

Peace conference

Sideshows

At home

A glimpse into the future

Appendix A: MI divisions in the War Department

Appendix B: Radio tractor units

Appendix C: G2 organization at GHQ

Appendix D: First Army Observation/Photo Air Service

Appendix E: First Army Signals Intelligence stations

Appendix F: First Army Security Service monitoring stations.