Thames Valley Police was called to a large-scale disorder involving a group of young men in Meadow Road, Henley-on-Thames, last night at approximately 9.55pm.
It is believed that glass bottles were used as weapons and as a result of the disorder, two people, an 18-year-old man and a 20-year-old man, suffered non-life threatening injuries.
The 18-year-old has since been discharged from hospital, but the 20-year-old remains in hospital with a fracture to his jaw.
Three people, a 17-year-old boy from Henley-on-Thames, and two 18-year-old men from Maidenhead have been arrested on suspicion of Section 18 GBH with intent, affray and robbery and remain in police custody.
Anyone who witnessed the incident or has any information should call the Police on 101, quoting reference 43200154394.