The most common and most likely answer to this crossword clue is the 6 letter word MENTOR
I've seen this crossword clue in Financial Times
M
E
N
T
O
R
More clues leading to the result MENTOR
- Guide people over hill
- One advising soldiers on hill
- Guide soldiers over Dartmoor landmark?
- Designed, as they say, gold trainer
- People serve up rhubarb for tutor
- Soldiers rejected rubbish advisor
- Trainer getting section of regiment organized
- Guide soldiers to reach Dartmoor location?
- Soldiers beginning to talk to soldiers’ teacher
- Guide chaps on mountain
Buddy explains!

The straight part
We know that "tutor" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case tutor = mentor.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does MENTOR mean?
MENTOR noun- A wise and trusted counselor or teacher
- To act as someone's mentor