The Bombers played four preseason Professional Indoor Football League (PIFL) games in 1998. Losing only once:
The Green Bay Bombers tied with their sister team, Madison Mad Dogs, for the second best record in the PIFL with a 10–4 record. In the playoffs, the Bombers had to travel to Madison in the first round. They lost 19–46.
Keary Ecklund took his Bombers and Mad Dogs teams and defected from the PIFL to form the Indoor Football League (IFL). In 1999, the team finished with the second best record in the league at 9–3. The start of the season was not pretty, as the team lost two of their first three games, both loses to Peoria. The week before the playoffs, the Bombers beat Duluth, 52–15. Despite the great regular season record, the team was forced to travel to Lincoln in the playoffs. The Bombers brought back a 44–34 victory and a trip to Peoria for the IFL Gold Cup Championship. The Bombers won, 63–60.
The following year was very similar. After a mediocre 6–4 start, the Bombers won their final four games by large margins. After being routed 40–16 by Peoria, the Bombers took their frustrations out on LaCrosse to get the four game streak started, 62–26. The Bombers' actually got a home playoff game this time around and they took advantage of it, crushing Dayton, 64–23. Their bid for a repeat championship ended the following week, with a 21–10 loss at Steel Valley. When the IFL was sold, the Bombers disappeared.
In 2003, Green Bay got an AF2 team, the Green Bay Blizzard.