The march from the shore wasn't exactly short it took them a few days to not only pass from the oceanside village but all the way to the capital of Sparta.
Once they arrived, the legion accompanying them began to setup residence outside the city while Julius and the commanders accompanied Vasso and his troop into the city.
The entire contingent had provided escort just in case, and the oceanside village effectively was surrendered should it turn out that the newly arrived Romanus soldiers had not come in peace, well not exactly peace but rather than with hostility against Sparta herself.
This would be the worst time for a third-party to enter the war and steal their territory while the army was away defending their honor, and nation against the republicans who rose up and cast aside the kings who led their nations to prosperity after the fall of the Grand Empire.