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Introduction
The Northern League is an annual series of wargames competitions in the North of England. It started as a DBM doubles league and has featured competitions with many rule sets including DBMM, FOG and most recently ADLG.
Every year since 2008 I have written a post about the changing nature of the League along with various statistics. This page summarises both posts and data.
Rules used & attendance
Key events
- 2006 "peak" DBM.
- 2007 final year of DBM as dominant rule set.
- 2008 transition from DBM to DBMM & FOG AM.
- 2013 advent of FOG AM v2 and the beginning of the decline of FOG AM.
- 2016 demise of both FOG AM & R.
- 2017 mass switch from FOG R to ADLG and a period of stability begins.
- 2018 last ever FOG AM competition.
- 2019 mainly a singles competition due to the popularity of ADLG.
- 2021 partial year due to the end of Covid in the summer.
- 2021 league moves to ADLG version 4.
- 2022 first full year post Covid.
- 2025 ADLG dominant with DBMM declining.
- 2026 DBMM decline continues.
Data set
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Data quality
The "official" DBMM results are always published much later than the ADLG results so I switched to getting the results from http://dbmm.org.uk/. In doing so I uncovered an issue that affected the DBMM data prior to 2025.
The DBMM doubles pairings have become incresingly fluid in recent years. Some players are listed in teams, but I found that it was common for a doubles team to consist of just one player and teams to change throughout the year.
This means I have probably overestimated the average players per round for DBMM as I assumed all teams listed as doubles always played as such. The effect is small (of the order of 1 to 2 players per round), but likely to be significant given the low number of players involved.
The data from 2025 on is correct and I have also revised the post COVID data from 2021-24. There was indeed a drop of 0.8-1.2 in the number of players per round for all years except 2023. There's far too much work involved in correcting all the remaining data from 2008-19, but I may get round to it eventually.
The same situation does sometimes arise with ADLG but it is very infrequent as the competition is overwhelmingly a singles event: there's only one doubles team listed in 2025. Any occasional, ad hoc, teams (to balance numbers) have their score assigned to both individual's scores not to the team.
Related posts
Document history
- Created: 16:28, Wed 19 December, 2019
- Updated: 16:25, Mon 12 January, 2026
- Updated: 09:22, Fri 16 January, 2026
- Updated: 15:25, Thu 22 January, 2026
- Updated: 19:42, Fri 12 June, 2026
- Updated: 14:58, Fri 07 August, 2026
- Updated: 10:53, Sun 08 November, 2026
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