The Navy is a branch of a nation's military responsible for operations at sea, using ships, submarines, and aircraft to protect maritime interests and conduct operations on and under the water. Articles are a unique way for readers to learn about the world around them. In addition to building reading comprehension skills and increasing vocabulary, articles can be used for writing and research. Each branch of the Armed Forces is broken into 6 single-page sections: What is?, Uniforms, Equipment, Values, Fun Facts, and Words to Know.