Important order received by troops, as we see it (9)

'important' is the definition.
(similar in meaning)

'order received by troops as we see it' is the wordplay.
I cannot quite understand how this works, but
'order' could be 'om' (Order of Merit) and 'om' is located in the answer.
'troops' could be 'men' (both can mean soldiers) and 'men' is located in the answer.
'we' could be 'us' and 'us' is present in the answer.
'it' could be 't' (abbreviation. e.g. in 'tis) and 't' is found within the answer.
A single letter 'o' remains which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?