According to Google Translate, this is a graduating class of fighters for the Free Syrian Army. At the 4:15 mark, you'll see them perform what can only be described as a Nazi salute.
According to our Arabic translator and expert, Jonathan Halevi, the group is known as Fastaqim Kama Umirt and has a Wiki entry here.
According to the video, this is the third graduation class and the pledge of alligiance said during the Nazi salute is:
I Swear by Allah almighty (said three times)
I am going to be a loyal servant to the great land of Syria
I am going to be a loyal servant to the courageous land of Syria