World War I

Sample 
 Twenty-seven countries on five continents were involved in World War I.   This war was also called the Great War or The War to End All Wars. World War I was the bloodiest and most costly of all the previous wars. The total casualties numbered thirteen million with another thirteen million wounded.  The cost of this war was estimated to be more than $337 billion (Young World Book 364). World War I was different from previous wars because of the new types of weapons and methods used on the battlefields, in the skies, and on the seas.  New weapons and new methods of warfare were developed during World War I that dramatically affected the war.  On the battlefield, trench warfare forced the fighting nations to develop grenades, trench mortars, flame-throwers, and heavy artillery. The  British army first established the use of tanks, a new weapon in warfare.  The Germans, in turn, developed new weapons to deal with the tanks which included field guns such as the German 77 mm and French 75 mm  (Young World Book 369). A famous long range gun was called Big Bertha. This was also the first war in which cars and trucks were used to carry men and supplies to the front.         World War I marked the beginning of chemical warfare in which clouds of poisonous mustard gas contributed to the casualties of the war (Stewart 8).
TBC...