What if the allies had invaded Sardinia and Corsica instead of Sicily after their victory Tunisia? They could have done it. The Germans believed the next step for the allies was probably going to be the Pelopenesse and Greece. This was due to the planting of 'major martin' on the Spanish coast. Therfore, the oppurtunity existed to invade Sardinia or Corisica. If they had where would the allies land next? most certainly north of Rome. possible even the south of France. The alternative were endless.