"it was used in the early part of this war which improvised on the field of battle, but the success obtained by their use led to the invention of many new standard types and their subsequent adoption by all modern armies."
WHAT ARE GRENADES || In World War I, hand grenades were also known as “hand bombs.” The general philosophy for their use in the fighting armies was that grenades could kill the enemy underground or behind cover. They could also force the enemy into the open, providing targets for rifle and machine gun fire.
The "wireless" quickly proved invaluable to wartime efforts. For instance, were able to warn soldiers of an attack of poisonous gas, giving them time to don their gas masks.
WHAT IS A RADIO || Radio made its debut years before World War I — it was often used by ships transmitting messages via Morse code, and in 1912, operators on the Titanic depended on radio to communicate with other ships and with onshore radio stations.
This allowed for soldiers to have some amount of food and to be able to have a decent amount of calories to keep them working.
WHAT ARE FOOD RATIONS || The government began rationing certain foods in May 1942, starting with sugar. Coffee was added to the list that November, followed by meats, fats, canned fish, cheese, and canned milk the following March.
The weapon was invented in the 1800s, and early versions were used in the U.S. Civil War. But it wasn’t until World War I that the weapon came into its own, as mechanized slaughter took place on a scale scarcely imagined before.
WHAT IS A MACHINE GUN || Early machine guns were hand-powered, not automatic, but they provided a gateway for what was to dominate 20th-century battlegrounds. By World War I, machine guns were fully automatic weapons that fired bullets rapidly, up to 450 to 600 rounds a minute.
It was used widely for treating soldiers during World War II, curing battlefield wound infections and pneumonia.
WHAT IS PENICILLIN ||
used trigonometry to help the submariners know when to fire their torpedoes at a moving target. These devices were expanded to surface ships to provide more accurate firing of the guns.
WHAT ARE COMPUTERS ||