Arsenal were elected into the top division.
For the 1919/20 season, the first season after the First World War, Arsenal were controversially elected in to the first division, despite finishing fifth in the last season before the outbreak of war in the second division. However, they have remained at this level ever since.
Yes, I've heard Spurs fans bring that up from time to time, they thought they were robbed and have sometimes accused Arsenal of bribery etc. Just looking up the details now.
1914/15 season finishes, 20 teams in the league. Two are due to be relegated. These are Chelase who finished 19th and Spurs who finished 20th.
World War 1 breaks out and football is suspended for a few years.
Football is due to restart in 1919/20 and a decision is made that Division One will be expanded to 22 teams. These will be the 18 teams that stayed up in 1914/15, the 2 teams that would have been promoted that season (Derby and Preston) but then they needed to work out who the other 2 teams would be.
Teams were asked to apply and clubs voted for who they thought it should be.
Chelsea won one of the spots so were repreived from being relegated after finishing 19th before the war.
Spurs thought they had a good claim to be reprieved too after finishing 20th as did Barnsley who had finished 3rd in divison 2 pre-war. The other teams who applied were Wolves (4th in div 2), Arsenal (5th in div 2, although they were actually thought to be 6th due to a clerical error at the the time that wasn't even noticed until 1980), Birmingham (6th, but incorrectly awarded 5th in div 2 before the war), Hull, and Forest (7th and 18th in div 2 before the war).
Liverpool's chairman spoke up for Arsenal on the grounds that they'd been a member of the Football League the longest and they won the vote, Spurs get relegated.
Spurs and Barnsley were a bit robbed there. Think I'd have gone Barnsley myself for symmetry after Chelsea's reprieve. Save one club from relegation (Chelsea), promote one extra club (Barnsley). On merit Spurs definitely had a better case than Arsenal by the looks of it.