- - Backdrop for the 2019 film '1917': Abbr
- - 1914-1918 conflict, for short
- - Conflict of 1914-18, for short
- - International conflict featured in the second season of Downton Abbey (Abbr.)
- - Setting of the Robert Graves memoir "Good-bye to All That," in brief
- - 1914 - 1918 conflict: Abbr.
- - Major conflict between 1914 and 1918: Abbr.
- - Conflict of 1914 to 1918
- - Conflict that lasted from 1914 to 1918: Abbr.
- - Global conflict between 1914 to 1918: Abbr.
- - Conflict in 2017's "Wonder Woman," in brief
- - Global conflict of the 1910s (Abbr.)
- - Old Eur. conflict
- - Major conflict that ended in 1918, for short
- - Global conflict of 1914-18: Abbr.
- - Event precipitated on 6/28/1914: abbr.
- - Contest during the Spanish Flu
- - Conflict under Woodrow Wilson
- - Conflict that ended in 1918, briefly
- - Conflict that ended at 11:00 on 11/11
- - "All Quiet on the Western Front" conflict: Abbr.
- - "All Quiet on the Western Front" conflict, briefly
- - Big conflict that began in 1914, briefly
- - It ended on Nov. 11, 1918
- - Conflict during which the Lusitania was sunk: Abbr
- - It ended on Nov. 11
- - Conflict that ended on Nov. 11, 1918
- - The U.S. joined it in 1917
- - 1910s conflict, briefly
- - 1914-18 conflict, for short
- - Red Baron's conflict, briefly
- - DDE's first conflict
- - 1910s conflict
- - 1910s conflict, for short
- - The U.S. joined it in 1917: Abbr
- - The "Over There" era
- - Armistice Day conflict
- - 1914-'18 conflict, briefly
- - Its end is commemorated on Nov. 11
- - 1914-18 conflict: Abbr
- - 1910s conflict: Abbr
- - Gen. Pershing's conflict
- - Doughboy's conflict, briefly
- - Early 20th-cen. conflict
- - Doughboys' conflict Abbr.:
- - What the U.S. joined in Apr. 1917
- - Conflict for which "Over There" was written: Abbr.
- - The US joined it in '17
- - Four-yr. conflict
- - Teens conflict, briefly
- - Conflict that ended Nov. 11, 1918
- - It was over on 11/11 at 11 a.m.
- - "All Quiet on the Western Front" conflict
- - "A Farewell to Arms" conflict, briefly
- - Teens conflict: Abbr.
- - It ended on 11/11
- - Conflict of 1914-18: Abbr.
- - It ended at 11:00 on 11/11/18
- - Conflict that ended on Nov. 11
- - Conflict from 1914 to 1918, briefly
- - Huge 20th-cen. conflict
- - A.E.F.'s conflict
- - Doughboys' conflict, for short
- - "Gallipoli" conflict, briefly
- - Major 20th-cen. conflict
- - The 1919 Treaty of Versailles concluded it: Abbr.
- - The U.S. joined it in Apr. 1917
- - Conflict for the A.E.F.
- - Battle of the Somme setting, for short
- - "Over There" conflict, briefly
- - The Ottoman Emp. fell shortly after it
- - It marked the beginning of the "Lost Generation"
- - Subj. of "The Guns of August"
- - Big conflict of the 1910s, briefly
- - Red Baron's conflict, for short
- - Big 20th-cen. conflict
- - 20th-cen. global conflict
- - It ended at 11:00 on 11/11
- - AEF conflict
- - 20th cen. conflict
- - "All Quiet on the Western Front" subj.
- - Conflict that started in 1914, for short
- - 1910s conflict, for short: Abbr.
- - subject of benedict xv's "peace note" of 1917
- - First world war, abbr.
- - Historical event given its current name in 1939: Abbr.
- - gallipoli backdrop, briefly
- - jfk was born during it
- - It started in 1914: abbr.
- - 20th century struggle
- - When tank warfare began: Abbr.
- - A Farewell to Arms backdrop, for short
- - 20th-cen. conflagration
- - 1914–18: Abbr.
- - 1914–18 event: Abbr.
- - 1914–18 event
- - "Sucker Punch" setting, briefly
- - "In Flanders Fields" setting, succinctly
- - It ended in 1918
- - What TS Eliot was turned down for
- - '1917' backdrop: Abbr
- - 'A Farewell to Arms' setting: Abbr
- - 'A Farewell to Arms' subj
- - A.A. Milne served in it
- - Initialism since 1939
- - It ended Nov. 11, 1918
- - Teens fight, for short
- - 'A Farewell to Arms' setting, briefly
- - Gen. Pershing's heyday
- - Chapter in early 20th-century history: Abbr
- - It ended 11/11/18
- - Sgt. York served in it
- - 'Over There' subj
- - Theater of 1914-1918: Abbr.
- - When e.e. cummings was interned
- - Setting for Sgt. York's heroics
- - It didn't get its no. until 1939
- - It ended Nov. 11th
- - "Over There" occasion, for short
- - "A Farewell to Arms" backdrop, for short
- - Snoopy's fantasy, for short
- - Event from 1914-1918
- - Modern European history subj.
- - It began 7/28/1914
- - Event from 1914 to 1918, briefly
- - La Belle Époque ender: Abbr.
- - It ended La Belle Époque: Abbr.
- - Big Bertha's milieu
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