<P> The father of series protagonists Sam and Dean Winchester , John Winchester first appears in the pilot episode of the series , but plot devices such as flashbacks and time travel detail his background in later seasons . Apparently abandoned by his father at a young age -- his father actually died while serving a secret order known as the Men of Letters -- John Winchester grew up hating the man . John left high school to join the Marine Corps , eventually attaining the rank of corporal and receiving many medals for his service in Vietnam . After leaving the service , he found a job as a mechanic , and fell in love with Mary Campbell . </P>
<P> The father of series protagonists Sam and Dean Winchester , John Winchester first appears in the pilot episode of the series , but plot devices such as flashbacks and time travel detail his background in later seasons . Apparently abandoned by his father at a young age -- his father actually died while serving a secret order known as the Men of Letters -- John Winchester grew up hating the man . John left high school to join the Marine Corps , eventually attaining the rank of corporal and receiving many medals for his service in Vietnam . After leaving the service , he found a job as a mechanic , and fell in love with Mary Campbell . </P>
when does dean and sam find their dad
when does dean and sam find their dad
in the pilot episode
in the pilot episode