The prince's message was recorded at St James's Palace last week and aired on the British Forces Broadcasting Service Tuesday, The Daily Telegraph reported.
In the message, the prince paid tribute to British troops all over the world and in particular in Afghanistan, where his son, Prince Harry, is stationed.
"With two sons currently serving in the Armed Forces, one of whom is with you all out there, I really do have at least some understanding of what your loved ones on the 'home front' are going through," Prince Charles said. "They are clearly missing you deeply, particularly at this time of year, and they are constantly thinking and worrying about you. I daresay in some ways it may be slightly easier for those serving away from home, with their mind on the job in hand, than those left behind, because of the constant worry."
The Prince said: "I also wanted to pay tribute to the extraordinary contribution made by those of you who belong to our Armed Forces, in all sorts of different parts of the world. Nowhere is your fortitude and relentless courage more clearly on display than in Afghanistan, where your resilience, patience and determination to see the job through -- usually in impossibly difficult conditions and circumstances -- is, quite simply, humbling."