Cryptic with a theme 2

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Across
  1. 4. Sounds like something a French child might say to their mother at bedtime? It's unpleasant (9)
  2. 6. Stun back? Crazy! (4)
  3. 8. Almost 100 years before charged particle leads Romans into battle (9)
  4. 10. Anglo huts ransacked in violent attack (9)
  5. 11. Quick, a fast river section! (5)
  6. 13. Sounds like pirate team's help, er, people on a holy war? (8)
  7. 15. Dark window missing third spider (5, 5)
  8. 17. City in Arizona that rises from the ashes (7)
  9. 18. Cycling cars for Mark (4)
  10. 21. Half of audio tape I used is incomplete, Ali
  11. 23. Spooner's group making jokes? Baldrick has one! (7, 4)
  12. 24. Indian cheese with initial energy replaced by Zippy's first tank (6)
  13. 26. Six balls idle? It's too much! (8)
  14. 27. Disorder in the UK? (7)
Down
  1. 1. Serious construction vehicle required for burial (11)
  2. 2. Significant brand of binbags (5)
  3. 3. Barracks confused after losing krypton- it was revered by the Egyptians (6)
  4. 5. Initially, old farmer unqualified to reverse a spaceship (3)
  5. 7. Disembodied hand is skinny before first goulash (5)
  6. 9. Outburst within important ruminations (7)
  7. 12. A Spanish chicken was a mission to the moon (6)
  8. 14. Shard of glass? Broken arm support, Queen! (8)
  9. 16. Eight beeches confused the top dog (3, 3, 6)
  10. 19. Vindictive, the Spanish fur coat wearer? (7)
  11. 20. Chinese dynasty mixed gin after first millennium (4)
  12. 22. Fried rice for Clapton, maybe? (4)
  13. 25. Ridley Scott film from out of this world (5)