Almost any Nebraska fan can tell you that Nebraska was undefeated in 1970, 1971, 1994, 1995 and 1997. Those are, after all, the years the Cornhuskers won the national championship.
However, if you press a follower of the Big Red further, they will have difficulty coming up with a list of any other teams. As it turns out, there are six more Husker teams that didn't lose a game.
1890; In their inaugural season, the Cornhuskers (known only as Lincoln at the time) went 2-0. They also didn't allow a single point.
1902; Twelve years after their first undefeated season, Nebraska went 9-0. It was another season they didn't allow a single point, as they outscored their opponents 152-0.
1903; Nebraska has had a knack of posting back-to-back undefeated seasons, and 1903 was no exception. After defeating future Big Ten foes Minnesota and Northwestern in 1902, the Huskers beat Iowa and Illinois in 1903. The defense did give up 11 points throughout the season (six to Iowa and five to Know), but the offense was better (outscored opponents 268-11).
1913; After waiting 10 years after what was arguably the best Cornhusker team to ever take the field, the 1913 version of the Big Red went 8-0, playing six of their eight games in Lincoln.
1914; This version of the Cornhuskers was better than the one that preceded it in 1913. Five of their seven wins were by more than 10 points as they finished 7-0-1.
1915; This is a rare feat in college football. Many football teams don't finish a season without a single blemish on their record. Even fewer do it in back-to-back seasons.
It would be an incredibly difficult challenge to find a team that wins every game for three straight years. Nebraska did it from 1913-1915. The 1915 version of the Cornhuskers, who finished 8-0, outscored their opponents 282-39.
1970; It took them from 1915-1970 to have another undefeated team, but this team brought home something no other team had—a national championship. They finished the season 11-0-1.
1971; The 1971 Cornhuskers are considered by some to be the best in the history of college football. They outscored opponents 507-104, won the "Game of the Century" vs. No. 2 Oklahoma 35-31 in Norman and blasted Alabama 38-6 for the national championship to finish 13-0.
1994; After barely missing out on perfection in 1993, the 1994 Cornhuskers "Finished the Business." With a suffocating defense and punishing ground game, Nebraska finished 13-0 and brought coach Tom Osborne his first national championship.
1995; They set the record for rushing yards in a game, didn't allow a sack on quarterback Tommie Frazier all season, won every game by at least 14 points and set the NCAA record for rushing yards per attempt in a brilliant 12-0 campaign that's considered to be the most dominant team in the history of college football.
1997; In coach Tom Osborne's final season, Nebraska survived a game Missouri squad, throttled Texas A&M to win the Big 12 championship and thoroughly demolished Peyton Manning's Tennessee Volunteers to finish 13-0 and win the last of Nebraska's five national championships.