Flank him on the left.
2 seconds sound clip from the The Enforcer (1951) movie soundboard.
You can hear this line at 00:02:23.759 in the Blu-ray version of the movie.
Quote context
[...]
- Check it. There's nobody out there.
- If you get it, I'll get it. Come on.
- Yeah?
- OK. Be with them in a minute.
- I hope he holds together until morning.
- I'll put him on the stand the first thing. Send him in.
[...]