Memoir '44
Where can sandbags be placed, and can they go on a bunker or a river?
Sandbags can be placed on any land hex, including a bridge or a bunker, but not on a river hex since a river isn't land. On a hex that already has protection they only add the ignore-first-flag benefit. No unit can be ordered to create them: sandbags appear only through a Dig In card or a scenario's special rules. In a card's wording "countryside" means a plain green or snow hex with no terrain tile.