The 28-year-old royal - who is currently serving on the frontline in Afghanistan and is nicknamed Big H by his comrades - unleashed a devastating 100lb Hellfire missile on the chief during an attack in October. One of his comrades told The Sun on Sunday newspaper: "We were on patrol and the Apache helicopters were called in. We heard this posh voice come over the radio and knew it was Big H. they were tracking a Taliban leader - he was commander level. "The Apache then let off some Hellfire missiles and its 30mm cannon and `boom`. It was Big H all the way." Harry - a gunship co-pilot - is on tour in Helmand and has been flying daily combat missions helping "troops in contact", the code given when ground forces are engaged by enemy fighters and he has become a very popular figure with his comrades. The insider added: "I met him in the cookhouse. I saw this bloke standing in line and I went, `That`s Big H.` He`s like a normal squaddie. All the guys in Afghan have so much respect for him and love him. "Big H is a legend, he`s been out in Afghan and he`s doing the business. All the guys love him - he`s Big H. He likes a drink and a laugh and he`s one of the lads."