Cryptic crossword clue
War zone aid, one with companion picking up litter? 9-6

The most common and most likely answer to this crossword clue is the 16 letter word STRETCHER-BEARER

I've seen this crossword clue in The Times
S
T
R
E
T
C
H
E
R
-
B
E
A
R
E
R

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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.

Crossword Answer definitions

STRETCHER-BEARER noun
  1. A person who carries, or helps to carry, injured or dead people on a stretcher.

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