How did the soldiers drive the veterans form the capital?

Answer:Obviously refers to the July 1932 eviction from Washington DC of unarmed US war veteran protesters and their families some 7000-15000 people who had come to protest their unemployment / homelessness / starvation and the non payment of their WWI veteran pay to the US government during the Great Depression.

After some violence had broken out the night of July 28th (the Washington police chief was injured and 2 protesters killed by police). The then President (Herbert Hoover) sent in army troops led by General Douglas MacArthur. Against the orders of the President to act with 'restraint' MacArthur attacked the protesters at night with cavalry, sabers, rifle fire, machine guns, and tanks, killing / wounding 100+, then burned their tents to the ground despite the efforts of the Washington police chief and officers to protect the unarmed crowd.