OTD in World War I History: Hungarian troops rout the Russians at Jarostaw (1915).

OTD in World War I History: Offensive at Gorlice-Tarnow begins (1915) (Work is in the public domain in its country of origin and areas where copyright term is the author's life plus 70 years or fewer. US work that is in the public domain in the US because it was published in the US before 1931.)

OTD in World War I History: The Ottomans besiege the Armenian city of Van (1915) (The work is in the public domain in its country of origin. The work is in the public domain in the United States because it was published before January 1, 1931.)

OTD in World War I History: Third Battle of Champagne (1917) (This work was published before January 1, 1931 and it is anonymous or pseudonymous due to unknown authorship. It is in the public domain in the United States.)

OTD in World War I History: The United States declares war on Germany (1917) (This work is in the public domain in the United States because it was published before January 1, 1931.)

OTD in World War I History: Battle of the Avre (1918) This work created by the United Kingdom Government is in the public domain.

April 2, 1917, President Wilson addressed Congress, requesting a declaration of war. Today only (April 2nd), a donor is offering to subsidize 25 new, first-time, U.S./Canada memberships at a reduced price of $25. Please consider joining the WWIHA at ww1ha.org. Enter “Democracy” in the discount code.

OTD in World War I History: Battle of Moreuil Wood (1918) (This Canadian work is in the public domain in Canada because its copyright has expired. This work is in the public domain in the United States because it was published before January 1, 1931.)

OTD in World War I History: First Battle of Gaza (1917) (Work first published in the Ottoman Empire is now in the public domain because the Empire's copyright formalities were not met or because the copyright term (30 years after the death of the author) expired before the Empire was dissolved)

OTD in World War I History: Germans sink the SS Sussex (1916) (This work in the public domain in its country of origin and other countries where the copyright term is the author's life plus 70 years or fewer. This work in the public domain in the U.S. because it was published before 1/1/1931.)

OTD In World War I History: Siege of Przemyśl end (1915) (This work was published on territory of the Russian Empire (Russian Republic) before 7 November 1917. This work is in the public domain in the United States because it was published before January 1, 1931.)

OTD in World War I History: Operation Michael begins (1918) (This work created by the United Kingdom Government is in the public domain. This media file is in the public domain in the U.S. where the copyright has expired, often because its first publication occurred prior to January 1, 1931.)

OTD in World War I History: Battle of Kahe (1916)

OTD in World War I History: Abdication of Tsar Nicholas II (This work in public domain in its country of origin, other countries and areas where the copyright term is the author's life plus 70 years or fewer. In the public domain in the United States because it was published before January 1, 1931)

OTD in World War I History: Fall of Baghdad (1917) (This work in public domain in its country of origin, other countries and areas where the copyright term is the author's life plus 70 years or fewer. In the public domain in the United States because it was published before January 1, 1931.)

OTD in World War I History: Battle of Neuve Chapelle (1915)

The spring issue of "World War One Illustrated" has just been published. Members receive three issues each year. If you find an article of interest in the spring issue and want to ensure you don't miss the next two issues, become a member of the WW1HA. Memberships are available at ww1ha.org.

Women's History Month Event: Dr. Elizabeth Cobbs will discuss her book "The Hello Girls: America's First Women Soldiers" on 19 March at 8 p.m. ET. Membership in the World War I Historical Association is required to join the conversation. Membership is available at ww1ha.org.

OTD in World War I History: The Treaty of Brest-Litovsk was signed (1918) Image held in the George Grantham Bain Collection/Library of Congress, Washington, D.C. (digital file no. 26094)

OTD in World War I History: Battle of Bitlis (1916)

OTD in World War History: German troops capture Tallinn, Estonia (1918). (Image in the public domain in its country of origin, other countries, areas where the copyright term is the author's life plus 70 years or fewer. Image in public domain in the U.S. because it was published before 1/1/1931.)

OTD in World War I History: Operation Faustschlag (1918) in Ukraine. (Imagine is in public domain in the U.S. because it was published before 1/1/1931. This file is a Ukrainian or SSR work; presently in the public domain in Ukraine; published before 1/1/1956; creator died before that date)

OTD in World War I History: Battle of Verdun (1916) (Image is in public domain in the U.S. because it was published before January 1, 1931. Image is held within the "American National Red Cross photograph collection," www.loc.gov/rr/print/res... of the LOC. No known restrictions on publication.)

OTD in World War I History The Singapore Mutiny (1915) (Image is in public domain according to the Copyright Act (Cap. 63) of Singapore and its term of copyright has expired. In addition, the image is in the public domain in the U.S. because it was published before January 1, 1931.)

"Researching Your African American World War I Descendant." February 15 at 4 p.m. ET / 3 p.m. CT / 2 p.m. MT / 1 p.m. PT. Join the seminar at us06web.zoom.us/j/8733857152...

Our new website has been launched! Check it out at ww1ha.org

The artillery shells have fallen silent, the tanks have stopped rolling, the mustard gas canisters have been stored away, the Red Cross bandages are no longer being rolled, the aircraft are grounded, and the fire trenches are quiet. Join the World War I Historical Association (ww1ha.org).

The phrase “Here Rests in Honored Glory an American Soldier Known but to God” represents the sacrifice and service of our nation's veterans, both past and present. One hundred and four years ago, the Unknown Soldier was brought back from France and interred.