IHS

• IHS are the letters from the first three words of ‘In Hoc Signo Vinces’ (In this sign you will conquer).
• IHS also stands for the first three letters of the word ‘Jesus’ in Greek capital letters.

Constantine I

• ‘In this sign you will conquer’ are the famous words spoken by Constantine I after seeing the letters Chi Rho in the sky before his victory over Maxentius at the Battle of Milvian Bridge in 312 CE.

Milvian Bridge