Which was not a strength of the south at the begging of the civil war?

The South's greatest strength lay in the fact that it was fighting on the defensive in its own territory. Familiar with the landscape, Southerners could harass Northern invaders. The military and political objectives of the Union were much more difficult to accomplish.

Explanation:

1. He served as chief of staff of the US Army.

2. He helped train US soldiers and airmen in modern warfare.

3. He used and helped advance modern weaponry.

Explanation:

Marshall became chief of staff on the same day that World War II started in Europe in 1939. He helped to exponentially increase the size of the U.S. Army and serve as President Harry Truman’s secretary of state after the war.

On the other hand, his nonmilitary contributions following World War II were developing NATO, the Marshall Plan, and his efforts against communism in Western Europe.