the front

[Encolpius]

Hello, which preposition is correct in this sentence.

Her son died at the front / on the front / in the front.

Thanks in advance.

[TheParser]

Hello, which preposition is correct in this sentence.

Her son died at the front / on the front / in the front.

Thanks in advance.

***NOT A TEACHER*** I think that most Americans would say "died AT the front." But if you refer to a particular front: he died ON the Western Front. (When you read, you should write down in a notebook how native speakers use those three prepositions. Even native speakers don't always agree on which one is "correct.")

[Linguist__]

Is this an idiom? I've never heard it used in used a way.

I can think of sentences where each preposition is used with 'front', but they all require something more after - the front X.

He died at the front door.
He died on the Western Front - as TheParser gave
He died in the front room.

Apologies if this is an idiom I just don't know of.

[Barb_D]

Yes, it refers to being in a war, in the thick of the hostilities. At the front.