Small-time convict around a German camp (6)

I believe the answer is:

stalag

I'm a little stuck... Click here to teach me more about this clue!

'german camp' is the definition.
'stalag' can be an answer for 'camp' (German prison camp in World War 2). I'm not sure about the 'german' bit.

'small-time convict around a' is the wordplay.
'small' becomes 's' (abbreviation - e.g. clothes size).
'time' becomes 't' (abbreviation).
'convict' becomes 'lag' (I've seen this before).
'around' indicates putting letters inside.
't'+'lag'='tlag'
'tlag' going around 'a' is 'talag'.
's'+'talag'='STALAG'

Can you help me to learn more?

(Other definitions for stalag that I've seen before include "German prison_camp" , "German prisoner-of-war camp of WW2" , "German POW camp in WWII" , "German concentration camp" , "German camp for POWs" .)

I've seen this clue in The Sun.

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