The most common and most likely answer to this crossword clue is the 5 letter word FORAY
I've seen this crossword clue in The Guardian
F
O
R
A
Y
More clues leading to the result FORAY
- Battle about old raid
- Sally in fight to get round in
- Sally Field’s first love, a swimmer
- Raid that’s without end, without end
- Supporting flanks of army in attack
- Conflict involving old offensive
- Attack, finding nothing in fight
- Sally‘s in favour of a stop in Torquay
- …offensive wear, hiding nothing.
- Attempt to change eel’s gender
Buddy explains!

The straight part
We know that "Sally" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case sally = foray.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 FORAY mean?
FORAY noun- A sudden or irregular incursion in border warfare; hence, any irregular incursion for war or spoils; a raid.
- A brief excursion or attempt, especially outside one's accustomed sphere.
- To scour (an area or place) for food, treasure, booty etc.
- To pillage; to ravage.