Notes for Imperium Romanum II House Rules Land units may always withdraw to fleets in the same hex Change: 17.24. Delete the statement and vice versa. Siege attrition: The -2 modifier for unblockaded port is also given if the besieged units spend a supply point. An intercepting fleet can be intercepted. Combat: If both armies are eliminated, the leaders survive. Scenario 4. Caesar vs. Pompey: Caesar starts in Ravenna. The siege of Massilia is removed. Massilia becomes an inactive client of Pompey. Scenario 23. The Gothic Storm Persia has morale of 100.