If DTaP #4 is given with at least a 4-month interval after DTaP #3, it does not need to be repeated. The minimum age of 12 months for the fourth dose must be met. Decreasing the interval to less than 6 months, however, is not recommended.
The total given by the VA for the Indian Wars (1,000) seems to be a wild guess. Just two major defeats -- Custer's and St. Clair's -- add up to about 900 dead all by themselves. The official number of Americans killed in the Revolutionary War (4,435) is only about 2/3 the numbers usually given by historians. The total of US combat deaths during the Civil War is given as 140,414 -- or some 30,000 higher than most historians would estimate. I suspect (but don't know for sure) that the boost may come from the DoD counting deaths among POWs as combat rather than disease.
Casualties: The British side suffered 450 casualties of which 320 were Hessians. The Americans suffered 2,900 casualties of which the preponderance were prisoners. Follow-up: Following the battle Fort Lee on the west bank of the Hudson was abandoned and Washington and the Continental Arm retreated to the Delaware.