Because when people charged from the trench they were most likely killed in what is called no mans land.Trench warfare resulted in little territorial gain
The Danes were driven out of England
The Arabs
The Byzantine Arab wars were some of the longest lasting in history. They mostly pitted Arab Muslims against Eastern Roman or Byzantine Empire between the 7th and 11th centuries AD. The wars started during the initial Muslim conquests
George Washington. He was also the first president.