Display part of book connected with soldier (7)
I believe the answer is:
pageant
'display part of book' is the definition.
'pageant' can be an answer for 'display' (I've seen this before). I am not sure about the 'part of book' bit.
'connected with soldier' is the wordplay.
'connected with' becomes 'page' (I can't explain this - if you can you should believe this answer much more).
'soldier' becomes 'ant' (soldier is a type of ant).
'page'+'ant'='PAGEANT'
Can you help me to learn more?
(Other definitions for pageant that I've seen before include "elaborate display" , "Rich parade" , "Parade with tableaux" , "Elaborate procession on historical theme" , "Tableaux or dramatic scenes depicting historical events" .)