In the Driving to Sedan game in Campaign Book 1 (p70) it mentions that pontoon bridges can be built "by any German infantry unit". This is not mentioned in the card so must an infantry unit be adjacent to a river before a bridge can be built by playing an Attack card?
Pontoon Bridge Questions from the FAQ (Comment / Question)
Q. Does one of my units have to be adjacent to the river hex where I want to build my pontoon bridge? A. No. Building a pontoon bridge is a card play and does not require any units to be present. Note: Building pontoon bridges is a scenario specific rule.
Q. If Im allowed to build pontoon bridges, and my opponent is allowed to blow up bridges (like in Cadets of Saumur), can my opponent blow up a bridge I just built? A. Yes.