Charles took part in a search and rescue demonstration on Friday before he met families of the soldiers.
The couple then witnessed a commemoration service and wreath-laying at the Afghanistan Repatriation Memorial near the base.
Between 2001 and 2014, 158 members of the Canadian Armed Forces lost their lives in Afghanistan.
The royal couple's visit will culminate in Ottawa today as Canada marks its 150th birthday.
Canada is a member of the British Commonwealth of former colonies.
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