You're gonna march an army through an open plain when you know your enemies have air superiority? Are they betting that the JSDF deployed their entire force to Marles and have no reserves? Do they think they can take the city of Italica before the JSDF can respond? Either way, it's just a terrible idea because they have no way of holding the city even if they take it. A war of attrition with guerilla tactics was the better approach. Bleed our their money and men until the politics back home force them to retreat.