 The Challenge Cup Competition was suspended for the duration of the war.The majority of the trophies, such as the County Leagues and County Cups were also suspended for the duration of the First World War.1 - It is uncertain as to whether the matches played by St Helens Recs were friendlies or went towards the league programme

British rugby league system
1915–16 Northern Rugby Football Union Wartime Emergency League season
1916–17 Northern Rugby Football Union Wartime Emergency League season
1917–18 Northern Rugby Football Union Wartime Emergency League season
1918–1919 (January) Northern Rugby Football Union Wartime Emergency League season
1919 (Feb-May) Northern Rugby Football Union Victory season
The Great Schism – Rugby League View
The Great Schism – Rugby Union View
List of defunct rugby league clubs
Armistice with Germany