 Montgomery responded to these concerns by making a few small adjustments to the plan.Although he declined to increase the size of the American crossing force beyond two divisions, he agreed to keep it under the 9th Army rather than 2nd Army control.To increase Simpson's ability to bring his army's strength to bear for exploitation, Montgomery also agreed to turn the bridges at Wesel, just north of the inter-army boundary, over to the 9th Army once the bridgehead had been secured.