Teacher:Given a text, write a compressed version of it in a single sentence.
Teacher: Now, understand the problem? Solve this instance: Although we associate trench warfare with World War I, trenches were characteristic also of the Civil War. A scaffold was built so that a rifleman who fired a single-shot, muzzle-loading shoulder weaponcould step up and shoot over the top of the trench.
Student:
Although associated with WWI, trenches were also common in the Civil War. A rifleman could step up on a scaffold and fire a single-shot muzzle-loading weapon over the top of the trench.