They didn't have much of a choice - that's for certain.
OK, boys I know there are heaps of machine guns going to blow most of you to Kingdom come - but some ass back at HQ has decided walking slowly towards well dug in machine guns is a good idea (so long as he can sit on his ass 4 miles behind the front).
It seems that if they got a wound that was bad enough for them to be ent back to England they were delighted. Known as a "Blighty"
So my guess is most of them would have most liked an injury free ticket home.
Pity most never got that did they!