Possible Clues:

• Start of a Caesar claim
• Caesarean opening
• One glorious retreat between five and six on islands — it implies I gave the enemy no chance!
• Boastful opening
• Part of a memorable boast
• Start of a boast by Julius Caesar
• '___ Vidi Vicious' (critically acclaimed 2000 album by the Hives)
• First of a Latin trio
• Start of a classic boast
• Hives hit album "___ Vidi Vicious"