Company receives order beginning to march with soldier (8)
I believe the answer is:
commando
'soldier' is the definition.
(I've seen this before)
'company receives order beginning to march with' is the wordplay.
'company' becomes 'co' (abbreviation).
'receives' indicates putting letters inside.
'order' becomes 'om' (Order of Merit).
'beginning to' indicates taking the first letters.
'with' becomes 'and'.
The first letter of 'march' is 'm'.
'om'+'m'+'and'='ommand'
'co' placed around 'ommand' is 'COMMANDO'.
(Other definitions for commando that I've seen before include "Soldier from elite unit" , "Kilt-wearer might go" , "going this way is unbriefed?" , "Soldier trained to carry out dangerous raids" , "Member of a special service military unit" .)