The most common and most likely answer to this crossword clue is the 6 letter word BOOTEE
I've seen this crossword clue in The Guardian
B
O
O
T
E
E
Buddy explains!
The straight part
We know that "One warming to Tootsie/recipient of marching orders" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case one warming to tootsie/recipient of marching orders = bootee.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does BOOTEE mean?
BOOTEE noun- A soft, woolen shoe, usually knitted, for a baby or small pet.
- A thick sock worn under a wetsuit.
- An overshoe or sock worn to cover dirty shoes or feet.