 Complete the following phrase:  Labienus deceived the Parisii with a ruse. In the middle of the night he sent part of his army, making as much noise as possible, upstream to Melun. He left his most inexperienced soldiers in their camp on the right bank. With his best soldiers, he quietly crossed the Seine to the left bank and laid a trap for the Parisii. Camulogene, believing that the Romans were retreating, divided his own forces, some to capture the Roman camp, which he thought was abandoned, and others to pursue the Roman army. Instead he ran directly into the best two Roman legions on the plain of Grenelle, near the site of the modern Eiffel Tower and the École Militaire. The Parisii fought bravely and desperately in what became known as the 