 With British guns, in particular the devastation caused by the 5.5-inch, 4.5-inch and the 25-pounders already shelling the routes, the Japanese were slaughtered and this would last until the end of July.On July 28 th, a last desperate offensive of the Japanese had been brought to a halt.The Japanese Fifteenth Army then stepped in to help the shattered survivors of the 28th Army.