Squadron leader joined forces in a lather (7,2)
I believe the answer is:
steamed up
'a lather' is the definition.
I don't know anything about this answer so I can't tell whether this works.
'squadron leader joined forces' is the wordplay.
'leader' indicates taking the first letters.
'joined forces' becomes 'teamedup' (I've seen this in another clue).
The first letter of 'squadron' is 's'.
's'+'teamedup'='STEAMED UP'
'in' is the link.
Can you help me to learn more?
(Other definitions for steamed up that I've seen before include "Indignant (colloq.)" , "window being so opaque" , "Annoyed" , "Very agitated" , "Mad" .)