While other branches of the British army have corporals and lance-corporals among their non-commissioned officers, artillery units have bombardiers and lance-bombardiers. As an NCO rank, bombardier is pronounced ˌbɒmbəˈdɪə.
A company called Bombardier is in the news at the moment. They are “Britain’s last train makers”, but have just failed to win a contract to build new trains for Thameslink.
As those of you in the UK may have noticed, the newsreaders use a different pronunciation for the name of the company. They call it bɒmˈbɑːdieɪ or something similar. They are correct to do so.
The reason is that — despite its supposed Britishness and its manufacturing works in Derby — Bombardier Inc. is actually a Canadian conglomerate, named after its founder Joseph-Armand Bombardier, a Québécois. He was the inventor of the snowmobile. In French his name is pronounced bɔ̃baʁdje, so the English name of the company is an anglicized version of this.