Well, historically if a delaying action were required, a commander would choose a squad or platoon that he was sure would be reliable. If for example, you have a platoon of SS soldiers who were groomed from the Hitler youth, or Soldiers and Marines who fought on either side in the Island Hopping campaign. If a squad or two (only) were to be randomly fanatic, it really wouldn't impact games above the company level. If they "improperly" were used on a suicide charge, they would be mowed down and so much for the big advantage. I would say that there are plenty of historical examples of squads fighting to the last man to buy time, or to break the first hole in enemy lines. Give them a wicked rarity penalty for purchase and they will probably be bought as rarely as they existed. Micheal makes a great point about the FOW not really having an impact on the game, I think this would be about the same. Just my two centavos.