TORONTO - In a statement drafted with the help of military officials, the father of Canada's latest war casualty yesterday took aim at recent portrayals of his son as a poorly trained reservist who was bitterly unhappy in Afghanistan and questioned Canada's role in that country. Anthony Boneca Sr., whose son, Cpl. Anthony Boneca,0 was killed in a weekend gunfight with Taliban insurgents, called the 21-year-old reservist a committed, well-trained soldier who "knew what he was getting into." "My son volunteered to go to Afghanistan," Mr. Boneca said in the five-paragraph statement, issued on military letterhead. "Certainly, Anthony wanted to...