Bowled out old Australian captain in command (5)
I believe the answer is:
order
'command' is the definition.
(order is a kind of command)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for order that I've seen before include "American helping" , "An authoritative command" , "eg OBE" , "Type of column" , "Jesuits, say" .)