Jack and Annie travel back in time to the American Civil War period. These are what they see in the battlefields:

	Noun	Picture	Meaning
1.	field hospitals		Medical centers on a battlefield
2.	cots		Narrow foldable beds with a canvas surface or thin mattress
3.	stretchers		Devices used to carry people who are sick, injured or dead
4.	cannons		Weapons that fire heavy iron balls through an iron tube
5.	muskets		Shoulder guns with long barrels
6.	bombs		Devices that contain explosive or destructive material
7.	trenches		Long deep holes dug in the ground with steep sides
8.	canteen		A small container used by soldiers for carrying drinking water

Reference: Collins Cobuild Advanced Learner's English Dictionary, MSN Encarta Dictionary