your battle plan does look flawless in theory, but in reality it has a couple of major flaws...
the main one is that you seem to take the invasion route through a neighboring country, which may or may not have diplomatic/economic relations with Vuvuland. if the Vuvu army is informed of your attack plan, it can respond accordingly and send its armies to the flank of yours, taking away any surprise effect you have and demolish your tanks on the flanks.
another flaw is that you forgot one thing about the Vuvu army: they have diffetent technologies then us, and are (in certain conditions) somewhat superior to us (for example, the Vuvu-tanks have vibrating-uber-voice-unearthation weapon modifications, aka VUVUzelas, allowing them to stun and kill our troops). if you wont take into account the fact that your path leads through accustic places (such as mountains for example), you wont be able to inflict any damage to the Vuvu-nation.
my plan, on the other hand, is straight landing on a beach, an accusticaly fucked-up place, giving the Vuvu little-to-no advantage...
[sub]also, is Vuvu-land located in france? because if so that would make me laugh[/sub]