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Trench Warfare
Trench Warfare is a type of warfare that was first developed and used in World War I. Soldiers can hide in the trenches to protect themselves from enemy fire. But trench warfare also came with many downfalls and was an unsanitary war tactic. -
Gas becomes a Weapon
The Germans used chlorine gas bullets. It collapsed nearly the entire French line. This is the first time large amounts of gas were used as a weapon. -
Lusitania Sinking
The British ship the Lusitania was torpedoed by a German U-Boat. No warning was given. 1,198 people drowned, 128 of those people were Americans. -
Depth Charge
The first depth charge called "Type D" was developed by the Royal Navy's Torpedo and Mine School. The U-68 was the first German U-Boat that sank due to a depth charge. -
First Tanks
Britain's were the first to use tanks in combat in the Battle of Flers Courcelette. Tanks were created through the joining of the engineers and the industrialists, and a prototype was created. -
Zimmerman Telegram
A telegram was intercepted and the telegram contained a plan made by Germany and Mexico. They were forming a secret alliance. -
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Vladimir Lenin becomes a leader in Russia
Vladimir Lenin lead the Bolshevik Revolution and this led him to later become the first leader of the USSR. He lead the USSR up until his death. He was one of the most influential and controversial leaders of the 20th century. -
US joined the War
Congress agreed to go to war. The United States was on the side of France and Britain. -
The Draft
US Congress passed the Selective Service Act. This meant men in America would be forced to fight in the war. Wilson didn't like it, but he believed there was no other way. -
Germany and Russia make Peace
The Germans signed a peace treaty with the Bolshevik government in Russia. This treaty gave Germany land in the Ukraine. -
Battle of Cantigny
This was the first major American offensive battle in the war. This is the battle that lead America to fight harder more challenging battles. -
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Battle of Belleau Wood
This battle was between the Americans and the Germans. This battle was the effect of the battle Chateau Thierry. It was a battle that utilized the Marine Corps. -
Signing of the Treaty of Versailles
The Treaty of Versailles contained four sections. Germany must take responsibility for the war, pay all reparations, surrender their territories, and limit their military.
