Disaster is so foretold for infantrymen (12)

I believe the answer is:

footsoldiers

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'infantrymen' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'disaster is so foretold' is the wordplay.
'disaster' indicates an anagram.
'is'+'so'+'foretold'='issoforetold'
'issoforetold' is an anagram of 'FOOTSOLDIERS'.

'for' acts as a link.

Can you help me to learn more?

(Another definition for footsoldiers that I've seen is " military personnel".)

I've seen this clue in The Irish Times.

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