German veterans assembled around old memorial (10)
I believe the answer is:
gravestone
'memorial' is the definition.
(I've seen this before)
'german veterans assembled around old' is the wordplay.
'german' becomes 'g' (abbreviation).
'assembled' indicates an anagram.
'around' means one lot of letters goes inside another.
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'g'+'veterans'='gveterans'
'gveterans' is an anagram of 'gravestne'.
'gravestne' placed around 'o' is 'GRAVESTONE'.
(Other definitions for gravestone that I've seen before include "Churchyard memorial" , "lapidary valediction" , "superior to body" , "Burial marker" .)