### Clue: Sailor returned to invade African nation that is an island (6)
### Answer: TOBAGO 
 ### Explanation: Definition: an island
 **Reversal of**(returned) AB(abbrev. for able-bodied seaman,a Sailor) **contained in**(to invade) TOGO(an African nation). 
Answer:  An island in the Caribbean which with Trinidad form an archipelago state.