On the Firing Line By: Hamilton Brock Fuller

On the Fringe of the Great Fight By: George G. (George Gallie) Nasmith

On the Heels of De Wet By: Lionel James

On the King's Service Inward Glimpses of Men at Arms By: Innes Logan

On the Trail of Grant and Lee By: Frederick Trevor Hill

On War By: Carl von Clausewitz

One Man's Initiation—1917 By: John Dos Passos

One Young Man The simple and true story of a clerk who enlisted in 1914, who fought on the western front for nearly two years, was severely wounded at the battle of the Somme, and is now on his way back to his desk. By: J. E. (John Ernest) Hodder-Williams

Origin of the Anglo-Boer War Revealed (2nd ed.) The Conspiracy of the 19th Century Unmasked By: C. H. Thomas

Our Navy in the War By: Lawrence Perry

Our Pilots in the Air By: William Perry Brown

Our Soldier Boy By: George Manville Fenn

Our War with Spain for Cuba's Freedom By: Trumbull White

Out To Win The Story of America in France By: Coningsby Dawson

Over the top with the 25th Chronicle of events at Vimy Ridge and Courcellette By: R. Lewis

Over the Top With the Third Australian Division By: G. P. Cuttriss

Paris War Days Diary of an American By: Charles Inman Barnard

Peaceless Europe By: Francesco Saverio Nitti

Peking Dust By: Ellen Newbold La Motte

Pep: The Story Of A Brave Dog By: Clarence Hawkes

Percival Keene By: Frederick Marryat

Personal Memoirs of P. H. Sheridan, General, United States Army By: Philip Henry Sheridan

Peter Simple; and, The Three Cutters, Vol. 1-2 By: Frederick Marryat

Phantom Regiment; or, Stories of "Ours" By: James Grant

Pickle the Spy; Or, the Incognito of Prince Charles By: Andrew Lang

Pierrot, Dog Of Belgium By: Walter Alden Dyer

Potash and Perlmutter Settle Things By: Montague Glass

President Wilson's Addresses By: Woodrow Wilson

Prison Life in Andersonville By: John Levi Maile

Private Peat By: Harold Reginald Peat

Privy Seal His Last Venture By: Ford Madox Ford

Prize Orations of the Intercollegiate Peace Association By: Intercollegiate Peace Association

Project Trinity 1945-1946 By: Steve Rohrer

Psychological Warfare By: Cordwainer Smith

Pushbutton War By: Joseph Paul Martino

Pushed and the Return Push By: George Herbert Fosdike Nichols

Q.6.a and Other places Recollections of 1916, 1917 and 1918 By: Francis Buckley

Quin By: Alice Caldwell Hegan Rice

Radio Gunner By: Alexander Forbes

Raemaekers' Cartoons With Accompanying Notes by Well-known English Writers By: Louis Raemaekers

Raiding with Morgan By: Byron A. Dunn

Rebel's Recollections By: George Eggleston

Recollections and Letters of General Robert E. Lee By: Robert Edward Lee

Red Laugh By: Leonid Nikolayevich Andreyev

Remember the Alamo By: Amelia Edith Huddleston Barr

Reminiscences of a Pioneer By: William Thompson

Richmond National Battlefield Park, Virginia By: Joseph P. Cullen

Right Above Race By: Otto Hermann Kahn

Rise and Fall of the Confederate Government, Volume 1a By: Jefferson Davis

Rita By: Laura Elizabeth Howe Richards

Road Past Kennesaw: The Atlanta Campaign Of 1864 By: Richard M. McMurry

Rock of Chickamauga By: Joseph Alexander Altsheler

Romance of the Romanoffs By: Joseph Martin McCabe

Ronald Morton, or the Fire Ships A Story of the Last Naval War By: William Henry Giles Kingston

Roswell Report: Case Closed By: James McAndrew

Royal Regiment, and Other Novelettes By: James Grant

Running the Blockade By: Thomas E. Taylor

Ruth Fielding at the War Front or, The Hunt for the Lost Soldier By: Alice B. Emerson

S.O.S. Stand to! By: Reginald Grant

Saint's Progress By: John Galsworthy