Caesar's forces clashed with an alliance of Belgic tribes in 57 BC in the Battle of the Sabis. Before that battle, information from the Remi, a tribe allied with Rome, stated that the Germani (the Condrusi, the Eburones, the Caeraesi, and the Paemani) had collectively promised, they thought, about 40,000 men. These were to join 60,000 Bellovaci, 50,000 Suessiones, 50,000 Nervii, 15,000 Atrebates, 10,000 Ambiani, 25,000 Morini, 9,000 Menapii, 10,000 Caleti, 10,000 Velocasses, 10,000 Viromandui, and 19,000 Aduatuci. The whole force was led by Galba, king of the Suessiones. However, the alliance did not work. The Suessiones and Bellovaci surrendered after the Romans defended the Remi and then moved towards their lands. And after this the Ambiani offered no further resistance and the Nervii, along with the Atrebates and Viromandui, formed the most important force on the day of the battle. The Eburones are not mentioned specifically in the description of the battle itself, but after the defeat the Eburones became important as one of the tribes continuing to resist Roman overlordship.