The most common and most likely answer to this crossword clue is the 2 plus 4 letter word IN STEP
I've seen this crossword clue in The Daily Telegraph
I
N
S
T
E
P
More clues leading to the result IN STEP
- Going along with others, one’s on foot
- Favourite partners, one doing a backflip, dancing together?
- One note rung, displaying harmony
- Occupants of minster quietly singing from the same hymn sheet
- Home raised animals together
- In the military one may advance thus, conforming
- Agreeing to differ isn’t the last you’ll see of Mike Pence
- Popular pop group mostly showing rhythm
- Together with Epstein, resolved to drop one Ecstasy pill
- Top of Nordic piste is redesigned in accordance with others
Buddy explains!
The straight part
We know that "In the military one may advance thus/conforming" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case in the military one may advance thus/conforming = in step.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.