The Campanians sent an army to assist the Sidicini but were beaten in battle by the Samnites, the Samnites then seized the Tifata hills overlooking Capua (the main Campani city) and, having left a strong force to hold them, marched into the plain between the hills and Capua.
At this point the Campanians decided to surrender themselves unconditionally into the power of Rome, following which the Romans felt compelled to intervene to protect their new subjects against further Samnite attacks.
The Campanians joined the war as well, and led by the Latins a large army of these allied peoples invaded Samnium.
If the Romans had fought a great battle and had obliterated the Sidicini, there would be some mention of it or some evidence of a discontinuity at Teano.
Smith accords with the general conclusion that between 335 and 326, most likely in 334,[19] the Sidicini consented to lay down their arms and become part of the greater Roman municipality.