Eisenhower had no combat experience during World War I and had no combat experience during World War II.
As the Supreme Allied Commander of a multi-national military alliance, Eisenhower did not do "Combat". Eisenhower did "Politics".
His entire military carreer was "Politics".
And Cain’s experience with the National Restaurant Association was also a training ground for small p politics - not to mention working inside the corporate culture of several major corporations like Coca Cola and Pillsbury Corp.