At the beginning of September the United Nations had a large numerical superiority of men in the line divisions and in army reserve. In the skies over the battlefield and in the coastal waters guarding the Perimeter flanks, United Nations aerial and naval might was virtually uncontested.
Approximately 600 American medium tanks mounting 90-mm. and 76-mm. guns were in the battle area on 1 September, as contrasted with probably not more than 100 North Korean Russian-built medium T34 tanks mounting 85-mm. guns. Eighth Army also had overwhelming superiority in artillery and mortar fire.