Your Grammar Nazi

From The Nation, which knows better: 

THE LONGEST WAR TURNS 12: As the war in Afghanistan entered its twelfth year on October 7, two Special Forces soldiers were killed in Wardak Province, bringing the US death toll in that country to 257 so far in 2012. More than 2,000 US soldiers have been killed since the war began.

This is not illiteracy as much as innumerancy. The war in Afghanistan started on October 7, 2001. That means it has turned 11 years old, not 12. Although it is true that it has entered its twelfth year.

 

On the day you are born, you enter your first year. You are not one year old. On your first birthday, you turn one year old and you enter your second year.