Directions: In the following question, some parts of the sentence may have an error. The error, if any, will be in one part of the sentence. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from errors, select 'No error' as your answer.

The tactics in the war were the traditional (A)/ nomad tactics of harassing the enemy (B)/ on the march, constantly retreating before him, (C)/ and avoiding an general engagement. (D)/ No error (E)/.