Three county ambulance staff members became casualties themselves after two separate attacks.
Staffordshire Police say two men have been arrested on suspicion of assault and are are being held in custody for questioning.
The first attack happened after a West Midlands Ambulance Service crew was called out, at 8.47pm, on Wednesday (September 7).
They went to help a man suffering a head injury following a fight in Clayton Road, Newcastle.
A paramedic and medical technician were injured when they were assaulted. A 23-year-old man was arrested at the scene.
A further emergency call for help was made just before midnight.
This time a man suffering from breathing problems became agitated and attacked a medical technician in the back of his ambulance.
A 56-year-old male was arrested on suspicion of assault at the Queens Hospital.