The announcement of the disbandment of the team was followed by an emergency meeting by the league to discuss the folding and how to handle the unbalanced schedule left through unplayed Legionnaires games.

Eric Vail, future Calder Memorial Trophy winner as NHL rookie of the year, played with the Legionnaires as a 16-year-old during the team's last season (1969–70).

Defenceman Don Ward went on to play in the NHL but the most flashy player was undoubtedly Glen Forbes, who finished second in league scoring with 23 goals, 25 assists and 58 points in just 23 games.

In the first contest, played Dec. 7, 1954, Forbes blinked the red light four consecutive times in the third period as the Legionnaires edged London 6–4.

When the season ended, Forbes had missed the league scoring title (which was won by Blenheim's Elio Marcon) by a single point.

Other stalwarts from that first Legionnaire team included Bob Duncan, who scored 19 goals and 13 assists (including a four-goal game of his own); Tussy Dunham, who notched nine goals and 22 assists, and goalie Bob Foster, who made 18 saves to record the first shutout in team history as Sarnia defeated Blenheim 4–0 on December 28, 1954.

Sarnia Observer sports editor Freddie Wheeler restored order by playing the national anthem, a move that shamed the combatants into coming to attention.

Members of the 1956-57 team that won the first championship in Legionnaires history included: Coach Stu Cousins, General Manager Tommy Norris Players: Pat Stapelton, Gary Vena, Paul 'Butch' Crawley, Bill Armstrong, Larry Cunningham, Glen Forbes, Bob Foster, Peter Bentley, D. Foster, Dick Robinson, George Spencer, Don McPhail, Eric Haddon, Ross Dark, Ted Wright, Mike Muir, Hartley Vernon, Jack Kerwin and Eddie Leslie.

The Legionnaires fell behind the Woodstock Warriors, who were led by Walter Gretzky, the father of future hockey superstar Wayne Gretkzky, by two games to none in the best-of-seven opening round.

Also of note that year was the fact that the Legionnaires played a home exhibition game against the Chicago Black Hawks, losing to the NHL club by a 14–6 score.

Members of the 1957-58 Legionnaire team that won the club's second title included: Coach Ollie Haddon, General manager Tommy Norris G. Paiment, P. Kilbreath, Art Turcotte, Don McPhail, Neil Armstrong, Dick Robinson, G. Harris, Paul Crawley, N. Harris, Pat Stapelton, Mike Muir, D. Chivers, M. Guthrie, Ross Dark, J. McKellar, Eddie Leslie, Pete Bentley and Jack Kerwin.

Members of the 1958-59 Legionnaires team that won the team's third crown included: Coach Ollie Haddon, General manager Tommy Norris Players: C. Knetchel, Larry Cunningham, J. Mara, D. Foster, C. Adams, Art Turcotte, Dick Robinson, N. Harris, G. Paiement, J. Bloomfield, G. Lakusciak, Norm Armstrong, P. Kilbreath, W. Verbeem, P. Hamilton, Paul Crawley, Ross Dark, D Chivers.Charlie Ryan.

Team members included: Coach Ollie Haddon, manager Tommy Norris Players: Gene Lakusciak, Larry Cunningham, C. Adams, Mike Muir, Joe Clark, Mike L'Heureux, Danny Chivers, C. Knetchel, Dick Robinson, Dave Besse, William Verbeem, Goalie Joe DeRush, Norm Harris, Danny Foster, Gerry Mara, Art Turcotte, Charlie Ryan.

Members included: Coach Ollie Haddon, General manager Tommy Norris Players: C. Depoli, B. L'Heureux, M. L'Heureux, N. Mallette, G. Lawrence, Jimmy Sanko, Phil Esposito, R. Lachowick, G. Lakusciak, D. Chivers, Goalie Joe DeRush, J. Clarke, J. Bloomfield, R. Heino, Dave Besse and W. Verbeem.Charlie Ryan Jerry Mara.

Members of the 1961-62 team that finishing sixth included: Coach Ollie Haddon, general manager Tommy Norris Players: B. L'Heureux, M. Filipchuk, Ron Carroll, H. Brand, R. Roy, R. Allen, T. Gray, T. Woodcock, R. Kuschel, Les Hoskins, D. Sheffield, G. Lakusiak, Ray Germain, M. L'Heureux, Goalie Joe DeRush, B. Finn, B. Doohan, G. Lawrence, B. Mackey Highlight == Although they were a sixth place club, this Legionnaire team won two playoff rounds, making it to the league final, where they were eliminated by the St. Thomas Barons in five games.

Members of the 1962-63 team that ended up in fifth place included: Coach C. Glaab, Manager Tommy Norris Players: B. Williams, G. Lawrence, G. Bonny, B. Finn, Ron Carroll, B. L'Heureux, Fred Pageau, R. Roy, T. Woodcock, H. Brand, R. Kuschel, T. Gray, Ray Germain, M. Filipchuck, Les Hosins Members of the 1963-64 team that finished fourth included: Coach Marty Zorica, Manager M. Wallis Players: D. Shanks, G. Geary, G. Lawrence, D. Burgess, D. Rhodes, Pete Mara, J. McVicar, Tom Ostrander, R. Kuschel, Les Hoskins, T. Gray, Ron Carroll, T. Woodcock, S. Wormith, K. Eadie, D. Caley In 1964-65 the Legionnaires once again became a force to be reckoned with, finishing in second place.

Members of the team included: Coach Marty Zorica, manager M. Wallis Players: Tom Ostrander, D. Burgess, D. Rhodes, Goalie Mitch Martin, P. Clark, C. Cryderman, Les Hoskins, M. Chartrand, Wayne McConnell, Ron Carroll, S. Wormith, Fred Pageau, Pete Mara.

Members of the 1965-66 championship Sarnia Legionnaires team included: Coach Marty Zorica, General manager M. Wallis Players: Goalies Ray Reeson, who got a playoff shutout, Mitch Martin, who had the league's best goals against average and Juri Lees.

Skaters M. Chartrand, Pete Mara, Cavan Simpson, Bill Carson, Wayne McConnell, Bob McAlpine, Don Gordon, Steve Stefanko, Ian McKegney, Les Hoskins, Dale Dolmage, Bruce Neely, Tom Ostrander, Don Burgess, Henry Levhonen, S. Wormith, Steve Stefanko and Fred Pageau This team won five best-of-seven playoff rounds to take the Sutherland Cup, beating the Ingersoll Nationals 4–1 in games before taking St. Thomas Barons 4–2, sweeping the Kitchener Greenshirts in four straight, eliminating Hamilton Mountain Bees 4-1 and Westclair York Steel 4 games to 2.

Members of the 1966-67 team included: Coach Ted Garvin, manager Don Savage Players: J. L'Heureux, Cavan Simpson, Don Gordon, Roy Bouman, G. Scheirs, B. Channell, G. Ogilvie, D. Wilson, Ian McKegney, Bruce Neely, B. Croot, Fred Pageau, Brian Skinner, D. Forrester, Henry Lehvonen, B. Carson, Steve Stefanko.

Members of the 1967-68 Sarnia Legionnaires squad that won the club's fifth championship included: Coach Ted Garvin, General manager Don Savage Players: Brian Skinner, Mike Bartley, Don Gordon, Bruce Neely, Doug Wilson, Karl Bagnell, Cavan Simpson, Dale Dolmage, Dave Dodds, Steve Stefanko, Len Fontaine, Jean Beaupre, Tommy Douglas, Roy Bouman, Bob Lacey, Joe Adams, Paul Love, Don Cain This team won four playoff rounds to take the Sutherland Cup, posting a 16-1 won-lost record in the process.

Gordon went on to the WHA, Douglas later played with the OHL Kitchener Rangers and Wing suited up with the Port Huron team in the semi-professional IHL.

The announcement of the disbandment of the team was followed by an emergency meeting by the league to discuss the folding and how to handle the unbalanced schedule left through unplayed Legionnaires games.

Members of the final Legionnaire team, the 1969-70 outfit that disbanded in mid-season, included: Coaches Hilt Fraser and Don Belringer, General manager Don Savage Players: Mike Bartley, Kirk Bowman, Eric Vail, Bob Gibson, Norm Gratton, Goalie Jeff Walker, Goalie Frank Blum, Don Clowater, Schooley, Don Stewart, Darrell MacGregor, Jim Jones, Roy Bouman, Gerry Bouchard, Red Henderson, Dale Dolmage, Bill Bowker, Chris Gavaris, Randy DeCarlo, Fred La Selva, Dale Power, Gord Redden, Tom Schoan, Andrew Miseiko Highlights: Goalie Jeff Walker recorded the team's last shutout, blanking the Guelph Beef Kings 3–0 on Nov. 25, 1969.

The final win in franchise history came Dec. 13, 1969 as the Legionnaires posted a 4–2 triumph in Guelph, with Fred LaSelva scoring the winner.

In the playoffs, they eliminated the St. Thomas Stars, Strathroy Rockets and London Nationals to win the Weir Cup as Western Ontario Jr. 'B' champions.