The British one came from WW2. German snipers realised that British tanks would stop for tea. At the time, they had to get out to make it. Newer tanks then required internal tea making facilities, so they couldn’t be picked off by snipers.

The french bread thing also says something about the culture.

Fyi, the French were terrifying in war for a long time. It just happened that the last 2 big wars had them in a bad position.