The most common and most likely answer to this crossword clue is the 6 letter word DEPLOY
I've seen this crossword clue in Financial Times
D
E
P
L
O
Y
More clues leading to the result DEPLOY
- Distribute notes on drama, turning out article for nothing
- Make extensive use of troops?
- Having forgotten odd bits of Byron, lip-reads, inverting order
- Make use of extremely despicable trick
- Bring into use from French tactic
- See 28a
- Drake losing heart – trick is to spread out
- Employment department’s plan to find position
- Position of democrat primarily exposing tactic
- Utilise tactic of French to get ahead
Buddy explains!

The straight part
We know that "Make extensive use of troops" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case make extensive use of troops = deploy.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 DEPLOY mean?
DEPLOY noun- Deployment
- To prepare and arrange (usually military unit or units) for use.
- To unfold, open, or otherwise become ready for use.
- To install, test and implement a computer system or application.