### Clue: Top general introduced to head of free church (6)
### Answer: FLEECE 
 ### Explanation: Definition: Top
 [ LEE(Robert E., Confederate general in the US Civil War) **placed after**(introduced to) **the 1st letter of**(head of) "free" ] + CE(abbrev. for the Church of England).
Answer: A jacket or top made from, well, fleece, a warm synthetic fibre.