- On Ideology
- On Indignation
- On Intelligence
- On Jewish Folklore
- On Killing
- On Land and Sea
- On Land and Sea at the Dardanelles (WWI Centenary Series)
- On Land and Sea at the Dardanelles: World War 1.
- On Liberty
- On Life and Death
- On Life, Death, and Suicide: Lessons for Better Mental Health from the History of Psychology, Theolo...
- On Lincoln
- On Living in an Old Country
- On Living Through Soviet Russia
- On Looking Into the Abyss
- On Lynchings
- On l’appelait Belgique
- On Many Routes
- On Meteorites, or Celestial Stones
- On Modern Indian Sensibilities
- On Montauk
- On My Country and the World
- On Nationalism
- On ne veut rien vous prendre...Seulement la vie
- On Operations
- On Our Doorstep
- On Our Own Strength
- On Paths of Ash
- On Patrol With the SAS
- On Political War
- On Political War
- On Politics
- On Rage
- On Roads
- On Saying Whatever
- On Seas Contested
- On Shaky Ground
- On Small War
- On Soldiers and Civilians - Short Stories of the American Civil War
- On Spartan Wings
- On Stalin's Team
- On Strategy
- On Strawberry Hill
- On Suicide Bombing
- On Sunspots
- On Sympathetic Grounds
- On Tactics
- On Target: Organizing and Executing the Strategic Air Campaign Against Iraq, The USAF in the Persian...
- On The Alexandrian War
- On the Anzac trail; being extracts from the diary of a New Zealand sapper, by "Anzac"
- On the Art of War
- On the Back of a Turtle
- On the Banks of the Rappahannock
- On the Battlefield of Memory
- On the Battlefields of France 1918
- On the Beat of Truth
- On The Block: Rocks, Rabbits and Reptiles
- On the Border With Crook
- On the Border with Crook
- On The Border With Crook
- On the Border with Crook
- On the Border with Mackenzie
- On the Bottom
- On the Brink
- On the Choice of Books
- On the Constitutionality of a National Bank
- On the Courthouse Lawn
- On the Cusp
- On the Deck or in the Drink
- On the Difficulty of Living Together
- On the East End
- On the Edge of Empires
- On the Edge of Flight
- On the Edge of History
- On the Edge of the Cold War
- On the Edge of the Holocaust
- On the Eighteenth Century as a Category of Asian History
- On The Eve
- On the Evolution of the Family
- On the Face of the Waters - A Tale of Mutiny
- On the Far Bank: The Effects of Gap Crossing on Operational Reach - Studies of Three Large-scale, Op...
- On the Fascination of Objects
- On the Fly: Israeli Airpower against the Al-Aqsa Intifada, 2000-2005 - Israeli Air Force (IAF) and I...
- On the Fly: The First Years of Cincinnati Baseball 1866-1870
- On the Fringe
- On the Fringe of the Great Fight: World war 1
- On the Fringes of Empire
- On the Front Line