Chemical and Biological Weapons
Chemical and biological weapons are a very deadly option for armies. They have lots of negitive effects on people and the land. There are many types of chemicals, and they have lots of different effects.
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Prevention-For WW1
At first they used cotten pads that were diped in a sulution of bicarbonate soda and was held over the face of the soldier. By 1918 both sides were better prepared. They had filter resperators that were more effective than the cotton pads dipped in bicarbonate soda
Prevention for modern day.
In 1972 the United States made a treaty to stop developing, producing, and stockpiling chemicals used in warfare, except in amounts for a counter attack. 188 of 195 countries are in the Chemical weapons convention (cwc). They use more advanced gas masks.

The Different Chemicals Used, and Their Effects WW1-
Chlorine gas is a noncombustable gas at room temp, it was a green yellow. It effected the upper airway and the lower respitory tract. It smelled like pinneapples and peppers. Caused death slowly by asphyxiation. Doctors were unable to find a way to treat it(1)
Mustard gas was used by both the allies and the central powers. The longer your exposed to it the worse it will get. Doesn't effect you immediatly, eventually you would find red spots on your body, that turn into painful blisters. Eye irritation, burning skin, itching red spots turn into yellow blisters, bloody nose, coughing, abdominal pain, and fever. Are the effects of Mustard gas(1).
Phosgene gas was used by the allies and the central powers. It was origaly used to make plastics and pesticides. Commonly referred to as CG. Irritated skins and eyes, corrosiveness, and its toxic(1).Mustard_gas_burns.jpg

Modern Day
Agent Orange was used in Vietnam. It was used to clear out the forests. the toxic compound in it is dioxin. It could cause cancer, liver failure, and birth defects. Saddam Hussien used chemicals weapons against the Kurds starting in April 1987. He used mustard gas and nerve agents. His actions killed about 5,000 innocent people. (2).

Delivery Method WW1-
They used arttilary shells for long range attacks. First method of releasing gas from a cylinders into a favorable wind that carried it over the enemies trenchs. It was dangerous because if the wind changed it would cause friendly deaths. Used a large bore mortar that fired the entire cylender as a missel it could send lethal consentration withouth releasing from cylinder(3)

Delivery method modern day-
the major change is the efficiently of dissemination. Dissemination is to use the chemical in a weapons system. they use bombs, projectiles, warheads, and spray tanks. Can use aerosol for non-lethal chemicals like pepper-spray. (3)

Chemicals are not used in war as much as they were in WW1. This is a good thing, because they chemical agents had many negitive effects that hurt not only the people living at that time, but also their offspring.
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Works Cited.
"Chemical Weapon Delivery." - Reliable Security Information. Web. 23 Feb. 2011. <>.(3)

"First World - Weapons of War: Poison Gas." First World - A Multimedia History of World War One. Web. 23 Feb. 2011. <>.(1)

1915, 22 April. "Poison Gas in World War I." Wikipedia, the Free Encyclopedia. Web. 23 Feb. 2011. <>.

Rosenberg, Jennifer. "Crimes of Saddam Hussein." 20th Century History. Web. 23 Feb. 2011.

"Agent Orange." Wikipedia, the Free Encyclopedia. Web. 24 Feb. 2011. <>.'lz,m>(2).