Guenter Lewey argued that the generals and war planners severely underestimated the enemy 's abilities to match and even to exceed US forces .
Guenter Lewey is a Professor of Political Science at the University of Massachusetts Amherst .
Guenter Lewey , a Professor of Political Science at the University of Massachusetts Amherst , argued that the generals and war planners severely underestimated the enemy 's abilities to match and even to exceed US forces .