Edition:
United States
Pictures | Thu Jul 24, 2014 | 6:05pm EDT

First World War firsts

World War One pioneered many "firsts" in technological, scientific and societal innovations. Tanks were invented as a means of breaking the trench warfare stalemate. REUTERS/Handout/Files

World War One pioneered many "firsts" in technological, scientific and societal innovations. Tanks were invented as a means of breaking the trench warfare stalemate. REUTERS/Handout/Files

World War One pioneered many "firsts" in technological, scientific and societal innovations. Tanks were invented as a means of breaking the trench warfare stalemate. REUTERS/Handout/Files
Close
1 / 20
"Tanks" were originally the codename for the armored vehicles in order to hide the purpose of their construction.  Factory workers were told they were manufacturing water tanks.  REUTERS/Handout/Files

"Tanks" were originally the codename for the armored vehicles in order to hide the purpose of their construction. Factory workers were told they were manufacturing water tanks. REUTERS/Handout/Files

"Tanks" were originally the codename for the armored vehicles in order to hide the purpose of their construction. Factory workers were told they were manufacturing water tanks. REUTERS/Handout/Files
Close
2 / 20
Machine guns were regularly employed for the first time, forever altering the battlefield. REUTERS/Handout via U.S. National Archives

Machine guns were regularly employed for the first time, forever altering the battlefield. REUTERS/Handout via U.S. National Archives

Machine guns were regularly employed for the first time, forever altering the battlefield. REUTERS/Handout via U.S. National Archives
Close
3 / 20
Aircraft were deployed in war en masse for the first time, for both air to air combat and for reconnaissance. REUTERS/Handout via National Defense Intelligence College

Aircraft were deployed in war en masse for the first time, for both air to air combat and for reconnaissance. REUTERS/Handout via National Defense Intelligence College

Aircraft were deployed in war en masse for the first time, for both air to air combat and for reconnaissance. REUTERS/Handout via National Defense Intelligence College
Close
4 / 20
Observation balloons continued to be utilized for reconnaissance as well as airplanes. REUTERS/Handout via U.S. Library of Congress

Observation balloons continued to be utilized for reconnaissance as well as airplanes. REUTERS/Handout via U.S. Library of Congress

Observation balloons continued to be utilized for reconnaissance as well as airplanes. REUTERS/Handout via U.S. Library of Congress
Close
5 / 20
World War One gave birth to the fighter pilot, including Eddie Rickenbacker, America's most successful World War One fighter ace. 

REUTERS/Handout via U.S. National Archives

World War One gave birth to the fighter pilot, including Eddie Rickenbacker, America's most successful World War One fighter ace. REUTERS/Handout via U.S. National Archives

World War One gave birth to the fighter pilot, including Eddie Rickenbacker, America's most successful World War One fighter ace. REUTERS/Handout via U.S. National Archives
Close
6 / 20
Aerial reconnaissance became a key component in military intelligence. REUTERS/Handout via U.S. National Defense Intelligence College

Aerial reconnaissance became a key component in military intelligence. REUTERS/Handout via U.S. National Defense Intelligence College

Aerial reconnaissance became a key component in military intelligence. REUTERS/Handout via U.S. National Defense Intelligence College
Close
7 / 20
Aircraft carriers were used for the first time, with the HMS Argus setting the template for future carriers capable of allowing planes to both take off and land on ships. REUTERS/Handout via U.S. Naval Historical Center

Aircraft carriers were used for the first time, with the HMS Argus setting the template for future carriers capable of allowing planes to both take off and land on ships. REUTERS/Handout via U.S. Naval Historical Center

Aircraft carriers were used for the first time, with the HMS Argus setting the template for future carriers capable of allowing planes to both take off and land on ships. REUTERS/Handout via U.S. Naval Historical Center
Close
8 / 20
Steel helmets were introduced as protective headgear for soldiers.  REUTERS/Files

Steel helmets were introduced as protective headgear for soldiers. REUTERS/Files

Steel helmets were introduced as protective headgear for soldiers. REUTERS/Files
Close
9 / 20
Before the broad issuing of steel helmets, most soldiers wore cloth caps.  REUTERS/Handout via U.S. National Archives

Before the broad issuing of steel helmets, most soldiers wore cloth caps. REUTERS/Handout via U.S. National Archives

Before the broad issuing of steel helmets, most soldiers wore cloth caps. REUTERS/Handout via U.S. National Archives
Close
10 / 20
Field telephones and wireless communications were regularly used for the first time to coordinate military movements. REUTERS/Handout via U.S. Library of Congress

Field telephones and wireless communications were regularly used for the first time to coordinate military movements. REUTERS/Handout via U.S. Library of Congress

Field telephones and wireless communications were regularly used for the first time to coordinate military movements. REUTERS/Handout via U.S. Library of Congress
Close
11 / 20
Improved communication technologies allowed for greater coordination of military offensives. REUTERS/Handout via U.S. National Archives

Improved communication technologies allowed for greater coordination of military offensives. REUTERS/Handout via U.S. National Archives

Improved communication technologies allowed for greater coordination of military offensives. REUTERS/Handout via U.S. National Archives
Close
12 / 20
Chemical weapons in the form of deadly poison gases were used for the first time. REUTERS/Handout via U.S. Library of Congress

Chemical weapons in the form of deadly poison gases were used for the first time. REUTERS/Handout via U.S. Library of Congress

Chemical weapons in the form of deadly poison gases were used for the first time. REUTERS/Handout via U.S. Library of Congress
Close
13 / 20
Chemical weapon use lead quickly to the development of countermeasures like the first gas masks. REUTERS/Handout via U.S. Library of Congress

Chemical weapon use lead quickly to the development of countermeasures like the first gas masks. REUTERS/Handout via U.S. Library of Congress

Chemical weapon use lead quickly to the development of countermeasures like the first gas masks. REUTERS/Handout via U.S. Library of Congress
Close
14 / 20
It was the first major war where a majority of combat casualties were inflicted by artillery. REUTERS/Handout via U.S. National Archives

It was the first major war where a majority of combat casualties were inflicted by artillery. REUTERS/Handout via U.S. National Archives

It was the first major war where a majority of combat casualties were inflicted by artillery. REUTERS/Handout via U.S. National Archives
Close
15 / 20
Blood banks were created for the first time to help stabilize the wounded from blood loss. REUTERS/Handout via U.S. Army Nurse Corps

Blood banks were created for the first time to help stabilize the wounded from blood loss. REUTERS/Handout via U.S. Army Nurse Corps

Blood banks were created for the first time to help stabilize the wounded from blood loss. REUTERS/Handout via U.S. Army Nurse Corps
Close
16 / 20
Submarines became a key component in naval strategy. REUTERS/Handout via U.S. Navy

Submarines became a key component in naval strategy. REUTERS/Handout via U.S. Navy

Submarines became a key component in naval strategy. REUTERS/Handout via U.S. Navy
Close
17 / 20
The first officially enlisted women appeared in the U.S. military, as the U.S. Navy created a reserve force which allowed enlisted women to work as yeomen, radio operators, nurses, or in other support roles. REUTERS/Handout via U.S. National Archives

The first officially enlisted women appeared in the U.S. military, as the U.S. Navy created a reserve force which allowed enlisted women to work as yeomen, radio operators, nurses, or in other support roles. REUTERS/Handout via U.S. National Archives

The first officially enlisted women appeared in the U.S. military, as the U.S. Navy created a reserve force which allowed enlisted women to work as yeomen, radio operators, nurses, or in other support roles. REUTERS/Handout via U.S. National Archives
Close
18 / 20
Mobile X-rays were developed to aid doctors in performing battlefield surgeries. REUTERS/Handout via U.S. Army

Mobile X-rays were developed to aid doctors in performing battlefield surgeries. REUTERS/Handout via U.S. Army

Mobile X-rays were developed to aid doctors in performing battlefield surgeries. REUTERS/Handout via U.S. Army
Close
19 / 20
Woodrow Wilson became the first U.S. president to make an official trip to Europe for the Paris peace conference.  REUTERS/Handout via U.S. Library of Congress

Woodrow Wilson became the first U.S. president to make an official trip to Europe for the Paris peace conference. REUTERS/Handout via U.S. Library of Congress

Woodrow Wilson became the first U.S. president to make an official trip to Europe for the Paris peace conference. REUTERS/Handout via U.S. Library of Congress
Close
20 / 20

Next Slideshows

Raising the Costa Concordia

The wreck of the Costa Concordia is refloated to be towed away for scrap.

Jul 23 2014

Waiting to die at Salvation House

The city of Varanasi, on the banks of the River Ganges, is Hinduism's holiest city and many Hindus believe that dying there and having their remains scattered...

Jul 23 2014

China's food factories

Inside the food factories that are part of China's massive manufacturing sector.

Jul 22 2014

Evicted from skyscraper slum

Venezuelan soldiers and officials begin moving hundreds of families out of a half-built 45-story skyscraper that dominates the Caracas skyline.

Jul 22 2014

MORE IN PICTURES

What Islamic State left behind

What Islamic State left behind

Sifting through the rubble of Islamic State's abandoned strongholds.

Iraqi forces complete takeover of Kirkuk

Iraqi forces complete takeover of Kirkuk

Iraqi forces take control of the last district in the oil-rich province of Kirkuk still in the hands of Kurdish Peshmerga.

Battle for besieged Philippine city nears end

Battle for besieged Philippine city nears end

Some of the 200,000 residents of Marawi, driven from their homes during 150 days of battle between the Philippine military and pro-Islamic State rebels, return to start a long cleanup of their devastated city.

Puerto Rico after Maria

Puerto Rico after Maria

Residents of Puerto Rico start to rebuild after Hurricane Maria devastated the island.

Road to the World Series

Road to the World Series

Highlights from the MLB playoffs.

Today in Sports

Today in Sports

Our top sports photography of the day.

One month after Mexico's earthquake

One month after Mexico's earthquake

Residents grapple with the aftermath of last month's quake in Mexico City that killed over 300 people.

Photos of the week

Photos of the week

Our top photos from the past week.

Richard Spencer speaks on Florida campus

Richard Spencer speaks on Florida campus

Protesters chanting "Go home Nazis" sought to drown out the speech by white nationalist Richard Spencer at the University of Florida, as the campus erected barricades and deployed hundreds of police officers to guard against unrest.

Trending Collections

Pictures

Podcast