The Sad Sack a comic strip and comic book character was created by Sgt. George Baker during World War II. Set in the United States Army, Sad Sack depicted an unnamed, lowly private experiencing some of the absurdities and humiliations of military life. The title was a shortening of "sad sack of s**t". The phrase, common during WWII, has come to mean "an inept person" or "inept soldier".
The comic strip debuted June 1942 in the first issue of Yank, the Army Weekly. Later a hardcover collection of Baker's wartime Sad Sack strips was published in 1944 and The New Sad Sack in 1946. The original book was concurrently published as an Armed Services edition mass market paperback.
After the war ended, The Sad Sack ran in newspaper syndication in the United States until 1957. Baker then sold the rights to Harvey Comics, which produced a large number of commercial spin-offs.
Sad Sack (played by Mel Blanc) made an appearance with Bob Hope and Betty Grable on the April 29, 1944 episode of G.I. Journal. The voice Blanc used was a stuttering delivery similar to Porky Pig.
Sponsored by Old Gold Cigarettes, The Sad Sack radio program aired in 1946 as a summer replacement series for The Frank Sinatra Show. It starred Herb Vigran in the title role with Jim Backus, Sandra Gould, Ken Christy and Patsy Moran. Dick Joy was the announcer for the series which began June 12, 1946 and continued until September 4. (Source: wikipedia)