Previous solution

Across: 1. Officer 5. Bugbear 9. Affiliate 10. Apart 11. Issue 12. Making out 13. Negotiate 16. Fired 17. Sword 18. Take sides 20. Calendula 23. Opted 25. Loose 26. Dependent 27. Distend 28. Nudists.

Down: 1. Oration 2. Fifes 3. Collected 4. Realm 5. Breakneck 6. Grain 7. Enamoured 8. Rotated 14. Good looks 15. Astounded 16. Festooned 17. Suckled 19. Sedates 21. Niece 22. Aspen 24. Trees.