### Clue: 24 across's movement training, eg workers and soldiers — potential unit (8,6)
### Answer: PEASANTS REVOLT 
 ### Explanation: Definition: 24 across's movement
A charade of PE ('training') plus AS ('eg') plus ANTS ('workers') plus RE ('soldiers') plus VOLT ('potential unit'). The sermons of John Ball inspired the Peasants' Revolt in 1381.