### Clue: Soldiers onto drama (oil spillage) that prompts an early uprising? (5,5)
### Answer: RADIO ALARM 
 ### Explanation: Definition: that prompts an early uprising
 RA(abbrev. for the Royal Artillery, a branch of the British military) **plus**(onto) **anagram of**(… spillage) DRAMA (OIL.
Defn: Something you set to wake you up early.