How did Burnside’s aggressive moves lead to failure?

Ambrose Everett Burnside was an American soldier, railroad-executive, inventor, industrialist, and politician from Rhode Island. He served as the Governor of Rhode Island from 1864 to 1869, and as a United States Senator for Rhode Island from 1875 until his death. As a Union Army general in the American Civil War of 1861-1865 he conducted successful campaigns in North Carolina and East Tennessee, as well as countering the raids of Confederate General John Hunt Morgan

Explanation:

the answer to fill in the blank in this question would be the word resource, it is defined as the money, material or people (since human resource is a very valuable good) that a company or a person has at disposition (meaning they can use the resource as they see fit), to be able to complete a task or achieve a goal.  

where is the picture