IIRC Rommel’s book was Infantry in Attack.And his success in France and that of his superior, Guderian, was initially the result of daring use of infantry to breach the Meuse, establish a beachhead, secure the bridges for the panzers , all against determined if badly led French forces.
When I play computer tactical wargames in the German role, I always ensure that I have a strong battery of 88mm guns in my unit: great for long-range tank killing and also for anti-aircraft work.