Prince Charles visited the Northwood's Joint Forces Command Headquarters on Wednesday (14.12.16).
Prince Charles
The 68-year-old royal was greeted by soldiers at the base in Middlesex, England, who spoke to him about the fight against the extremist group.
Rear Admiral Tony Radakin said: "It was an honour for me to host the Prince of Wales.
"As a long-standing supporter of the armed services, the prince took a keen interest in the diverse range of work we do to support UK defence."
Charles - who is married to Duchess Camilla - has previously been vocal about the threat to the Orthodox Christian Coptic church in the Middle East region in recent years.
He has also met with Christian Syrians and Iraqis who have been forced to flee their homes because of the rise of Islamic State.
The Prince of Wales recently spoke of the "appalling suffering" of Christians in Syria.
He attended the consecration of the Syrian Orthodox Church in west London where he gave a speech.
He said: "It is surely deeply encouraging, at a time when the members of the Syriac Orthodox Church in their homelands of Syria and Iraq are undergoing such desperate trials and such appalling suffering, that in Britain the Syriac Church is able to expand and gain in strength."
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