![A 1918 poster imploring American women to contribute to the war effort.](/sites/default/files/styles/large/public/sb%201%20Joan%20of%20arc.jpg?itok=SxQGagEL)
Joan of Arc Saved France
![Archduke Franz Ferdinand and his wife, Duchess Sophie.](/sites/default/files/styles/large/public/sb%204%20Archduck%20Franz%20.jpg?itok=OjiVGYni)
Archduke and Countess
![An advertisement for a musical and dance in 1917.](/sites/default/files/styles/large/public/sb%207%20Souvenir%20Bonds.jpg?itok=5HRhgpc6)
Souvenir Bonds
![A 1918 poster calling upon Canadians to buy Victory Bonds.](/sites/default/files/styles/large/public/2%20Buy%20Victory%20Bonds.jpg?itok=IM89cqen)
Buy Victory Bonds
![A 1917 poster printed by the U.S. government in the Philippines urging the purchase of Liberty Bonds.](/sites/default/files/styles/large/public/4%20Your%20Liberty%20Bond.jpg?itok=vTudOlbs)
Your Liberty Bond
![A 1917 Canadian poster with the caricatured heads of German leaders and military officials.](/sites/default/files/styles/large/public/5%204%20Reasons.png?itok=JWsoB8mL)
4 Reasons
!['And you?' reads the top text of a 1917 Austro-Hungarian poster asking citizens to draw war loans.](/sites/default/files/styles/large/public/6%20And%20You.jpg?itok=ht2TIToF)
And You?
![Two Austrian soldiers pushing open a door with the word 'Peace' behind it.](/sites/default/files/styles/large/public/11%20Kriegsanleihe.jpg?itok=NSMY5dj2)
Kriegsanleihe
![A medieval knight with the imperial eagle of Austria on his tunic on a 1916 poster.](/sites/default/files/styles/large/public/12%20Zivnostenska.jpg?itok=6xyvfAzy)
Živnostenská Bank War Loans
![Tsarist poster from 1916 urging Russians to support the war by buying war bonds.](/sites/default/files/styles/large/public/13%20Russia.jpg?itok=-8tdp7dh)
Tsarist War Bond Poster
![Tsarist poster from 1916 urging Russians to support the war by buying war bonds.](/sites/default/files/styles/large/public/14%20Russia.jpg?itok=QaM1GQTh)
Tsarist War Bond Poster
![Tsarist poster from 1916 urging Russians to support the war by buying war bonds.](/sites/default/files/styles/large/public/15%20Russia.jpg?itok=v0jISIR4)
Tsarist War Bond Poster
![Tsarist poster from 1916 urging Russians to support the war by buying war bonds.](/sites/default/files/styles/large/public/16%20Russia.jpg?itok=bxd0dNRh)
Tsarist War Bond Poster
![Tsarist poster from 1916 urging Russians to support the war by buying war bonds.](/sites/default/files/styles/large/public/17%20Russia.jpg?itok=QL8BJumO)
Tsarist War Bond Poster
![Tsarist poster from 1916 urging Russians to support the war by buying war bonds.](/sites/default/files/styles/large/public/18%20Russia.jpg?itok=4ul6AYR0)
Tsarist War Bond Poster
![Tsarist poster from 1916 urging Russians to support the war by buying war bonds.](/sites/default/files/styles/large/public/19%20Russia.jpg?itok=NMZMMuYU)
Tsarist War Bond Poster
![A 1918 poster from the Baruch Strauss Bank urging Germans to buy the 8th German war bonds.](/sites/default/files/styles/large/public/21%20Baruch%20Strauss%20Bank.jpg?itok=OdZvLMqr)
Baruch Strauss Bank
Baruch Strauss Bank
![A 1917 poster asking for 'Peace through victory' with the purchase of war loans.](/sites/default/files/styles/large/public/23%20Peace%20Through%20Victory.jpg?itok=hG_38VVD)
Peace Through Victory
![A 16th century soldier waving the Austro-Hungarian flag on a poster appealing for war loans.](/sites/default/files/styles/large/public/26%20Austrian%20War%20Loan.jpg?itok=vGg2R3BJ)
Austrian War Loan
![German paper currency had become so devalued that large stacks were required even for small purchases.](/sites/default/files/styles/large/public/29%20Cash-Delivery.jpg?itok=zZ3QSQmY)
Cash-Delivery Office
![The 2016 dedication of a monument to Russian and Soviet soldiers.](/sites/default/files/styles/large/public/32%20WWI%20and%20WWI%20Memorial.jpg?itok=ntQ7GSLL)
World War I and II Memorial
![A 1919 Russian White Forces poster depicting the Bolsheviks as a red dragon being defeated by a crusading knight representing the Whites.](/sites/default/files/styles/large/public/37%20For%20a%20United%20Russia.jpg?itok=iWx0yKXk)
For a United Russia
![A 1916 tsarist poster entitled 'Freedom Loan.'](/sites/default/files/styles/large/public/38%20Russia.jpg?itok=mBLDNmhc)
Tsarist War Bond Poster
![A pie chart of the military deaths of Entente Powers forces in World War I.](/sites/default/files/styles/large/public/Document6_0.jpg?itok=FC7LJNUE)
World War I Military Deaths (Entente Powers)
![A pie chart of the military deaths of Central Powers forces in World War I.](/sites/default/files/styles/large/public/Document6.555.jpg?itok=lGosmp-w)
World War I Military Deaths (Central Powers)
![Vladimir Putin at the 2014 opening of a new memorial to 'the heroes of the First World War.'](/sites/default/files/styles/large/public/41%20Heroes%20of%20the%20First%20World%20War.jpeg?itok=Nl3j0pEa)
The Heroes of the First World War
![Members of the Women’s Army Auxiliary Corps tending the graves of British soldiers.](/sites/default/files/styles/large/public/44%20Abbeville%20Cemtery.jpg?itok=F5W5_vb0)
Abbeville Cemetery
![Workers carved the names of Canada’s Great War dead into the Vimy Memorial in France.](/sites/default/files/styles/large/public/45%20Canadian%20National%20Vimy%20Memorial.jpg?itok=68zRYgvE)
Vimy Memorial
![A worker for the Commonwealth War Graves Commission would spend a week carving a regimental badge onto a headstone.](/sites/default/files/styles/large/public/46%20Headstone%20Carving.jpg?itok=ewf-7LsT)
Headstone Carving
![Nagelfiguren of Paul von Hindenburg.](/sites/default/files/styles/large/public/47%20Nagelfiguren%20of%20Paul%20von%20Hindenburg.jpg?itok=uUPtf665)
Nagelfiguren of Paul von Hindenburg
![The unveiling of the Whitehall Cenotaph.](/sites/default/files/styles/large/public/48%20Whitehall%20Cenotaph.jpg?itok=esC759mK)
Whitehall Cenotaph
![American Secretary of War John Weeks, President Calvin Coolidge, and Assistant Secretary of the Navy Theodore Roosevelt, Jr. at the Tomb of the Unknown Soldier.](/sites/default/files/styles/large/public/49%20Tomb%20of%20the%20Unknown%20Soldier.jpg?itok=2FTORwe4)
Tomb of the Unknown Soldier
![Brigadier General Francis Dodd of the Canadian Expeditionary Force unveiling the Menin Gate Memorial.](/sites/default/files/styles/large/public/51%20Menin%20Gate%20Unveiling.jpg?itok=ZOCnmOCj)
Menin Gate Unveiling
![One of the many panels inside the Menin Gate Memorial that lists the names of missing British and Commonwealth soldiers.](/sites/default/files/styles/large/public/52%20Menin%20Gate%20Panel.jpg?itok=I_QgP8Kz)
Menin Gate Panel
![General Charles de Gaulle laid a wreath at the Tomb of the Unknown Warrior at the Arc de Triomphe in Paris, France.](/sites/default/files/styles/large/public/53%20Arc%20de%20Triomphe.jpg?itok=wUAOd3hJ)
Arc de Triomphe Tomb of the Unknown Warrior
![A guard of honor at New Zealand’s Tomb of the Unknown Warrior during Armistice Day in 2012.](/sites/default/files/styles/large/public/54%20Tomb%20of%20the%20Unknown%20Warrior.jpg?itok=x3s3fg-7)
Tomb of the Unknown Warrior
![The Thiepval Memorial to the Missing of the Somme in France.](/sites/default/files/styles/large/public/55%20Thiepval%20Memorial%20to%20the%20Missing%20of%20Somme.jpg?itok=JvxlrMSj)
The Thiepval Memorial to the Missing of the Somme
![The Vietnam Veterans Memorial with the Washington Monument in D.C. in the background.](/sites/default/files/styles/large/public/56%20Vietnam%20Veterans%20memorial.jpg?itok=sfieYIgn)
The Vietnam Veterans Memorial
![A pie chart showing military and civilian deaths in World War I.](/sites/default/files/styles/large/public/Document6.5.jpg?itok=5E-rLhNa)
World War I Military and Civilian Deaths
![Charles, Prince of Wales, laying a wreath at a Remembrance Day service.](/sites/default/files/styles/large/public/DOcFzUyXcAAlDQB_2.jpg?itok=mPWCUP0P)
Prince Charles Wreath Laying
![A 1916 map of the Sykes-Picot Agreement between the United Kingdom and France.](/sites/default/files/styles/large/public/5071992592_990534bdb1_b_0.jpg?itok=Lx4B8Hzc)
Sykes-Picot Agreement Map
![Soldiers from allied countries in Vladivostok, Russia during the Civil War in 1918.](/sites/default/files/styles/large/public/Wladiwostok_Parade_1918.jpg?itok=Pbtym1b9)
Allies in the Russian Civil War
![Czech legionaries killed in fighting with Bolsheviks at Nikolsk-Ussurlysky in 1918.](/sites/default/files/styles/large/public/Czechoslovaks_victims_of_Bolshveki_near_Vladivostok.jpg?itok=aFPHql_E)
Czechoslovak Legionaries