The 1946 NCAA football season finished with the Notre Dame Fighting Irish crowned as the national champion in the AP Poll, with the United States Military Academy named as national champion in various other polls and rankings. The two teams both had won all of their games, with the exception of their November 9 meeting at New York’s Yankee Stadium, where they had played to a 0-0 tie in a #1 vs #2 matchup regarded as a "Game of the Century".
During the 20th century, the NCAA had no playoff for the college football teams that would later be described as "Division I-A". The NCAA did recognize a national champion based upon the final results of the Associated Press poll of sportswriters (the UPI Coaches poll would not start until 1950). The extent of that recognition came in the form of acknowledgment in the annual NCAA Football Guide of the "unofficial" national champions.^[3]
Georgia and UCLA would finish the regular season as the only unbeaten and untied teams. Georgia would even hammer this point home with a decisive Sugar Bowl win, while UCLA lost big in the Rose Bowl. Both Notre Dame and Army would not play in a bowl. Most third party observers would consider them National Champions.
Several new bowl games would debut, among them the Tangerine Bowl (later known as the Citrus Bowl and currently known as the Buffalo Wild Wings Citrus Bowl). Taken from http://en.wikipedia.org/wiki/1946_college_football_season.

Final Stats:

Rank	Team	Coach	First player drafted in the NFL
1	Notre Dame	Frank Leahy	T John Mastrangelo picked 16th by PIT
2	Army	Red Blaik	HB Glenn Davis picked 2nd by DET
3	Georgia	Wallace Butts	HB Charles Smith picked 142nd by CRD
4	UCLA	Bert LaBrucherie	QB Ernie Case picked 6th by GNB
5	Illinois	Ray Eliot	C Lou Levanti picked 213th by RAM
6	Michigan	Fritz Crisler	TB Bob Chappuis picked 26th by DET
7	Tennessee	Bob Neyland	G Denny Crawford picked 130th by GNB
8	Louisiana State	Bernie Moore	T Hubert Shurtz picked 152nd by PHI
9	North Carolina	Carl Snavely	T Ernie Williamson picked 79th by WAS
10	Rice	Jess Neely
11	Georgia Tech	Bobby Dodd	T Bob Davis picked 44th by NYG
12	Yale	Howard Odell	G Fritz Barzilauskas picked 3rd by BOS
13	Pennsylvania	George Munger	T George Savitsky picked 30th by PHI
14	Oklahoma	Jim Tatum	C John Rapacz picked 15th by BOS
15	Texas	Dana Bible	B Walt Heap picked 13th by BOS
16	Arkansas	John Barnhill	E Al Baldwin picked 25th by BOS
17	Tulsa	John Brothers	T Nelson Greene picked 34th by NYG
18	North Carolina State	Beattie Feathers	E Paul Gibson picked 78th by PIT
19	Delaware
20	Indiana	Bo McMillin	LB John Cannady picked 22nd by NYG