Decoration for military march is cheap stuff as well (6)
I believe the answer is:
tattoo
'decoration' is the definition.
(I know that tattoo is a type of decoration)
'stuff as well' is the wordplay.
'stuff' becomes 'tat' (I have seen 'Shoddy stuff' mean 'tat' so perhaps 'stuff' could also mean 'tat').
'as well' becomes 'too' (both can mean 'also').
'tat'+'too'='TATTOO'
'for military march is cheap' acts as a link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for tattoo that I've seen before include "Edinburgh show" , "Drum signal; skin mark" , "Picture dyed into the skin" , "that leaves a permanent impression on one" , "Skin painting" .)