Ἐὰν δὲ προσέλθῃς πρὸς πόλιν ἐκπολεμῆσαι αὐτοὺς, καὶ ἐκκαλέσαι αὐτοὺς μετ εἰρήνης.

1. Ἐὰν
   If
2. δὲ
   but
   and
3. προσέλθῃς
   you approach
   draw near, approach
4. πρὸς
   to
   toward
5. πόλιν
   city
6. ἐκπολεμῆσαι
   to make war against
   to war against, to wage war
7. αὐτοὺς
   them
8.  
   ,
    
9. καὶ
   and
10. ἐκκαλέσαι
    to call out
    summon
11. αὐτοὺς
    them
12. μετ
    with
13. εἰρήνης
    peace
    of peace
14.  
    .
     

If you approach a city to wage war against them, then call out to them with peace.