Correctly positioned current units on manoeuvres (2,4)
I believe the answer is:
in situ
'correctly positioned' is the definition.
(I've seen this before)
'current units on manoeuvres' is the wordplay.
'current' becomes 'i' (symbol for electric current).
'on' means one lot of letters go next to another.
'manoeuvres' indicates an anagram.
'i' after 'units' is 'unitsi'.
'unitsi' with letters rearranged gives 'IN-SITU'.
(Other definitions for in situ that I've seen before include "Appropriately positioned" , "In the natural position (Latin)" , "at original location" , "As originally located" , "American lift" .)