Hilarious error in this "tweet" from the pressure group Class.
The First World War began on 28th July 1914 not in June.
Class are an organisation that champions comprehensive education.
Obviously the person that wrote this tweet was chortling along to Blackadder rather than paying attention to facts. Not that facts feature very highly in the estimation of state school History teachers. It's all relative and easy-going and there's no wrong answers.