CLOCK WORD
The solutions from 1 to 12 are all six-letter words ending with the letter M in the centre. Moving clockwise from 1, the letters in the outer circle will spell out the name of a notorious US cavalry officer.
1. Batman’s city 2. Appropriate name 3. Town in Greater Manchester 4. Haphazard 5. Hydrated calcium sulphate
6. To preserve a body 7. Consecrated oil 8. Soft 9. Saliva 10. Self-evident truth 11. Selfishness 12. Musical beat