009 Does 'simple past tense' compulsorily need use of an adverb of 'past tense'?

'simple past tense'

Simple past tense indicates an action completed in the past.
Time adverbs are content words which add meaningful content to a sentence.
Context, sometimes, gives us the meaning.

E.g.: I didn't sleep.
Presumption: yesterday night.
Clearer: I did not sleep last night.
Clearer: I did not sleep during duty hours, through out my service.


Acceptable: We fought for our independence.
Presumption: Can't presume when the fight took place.
Clearer: We fought for our independence in 1776.
Alternate: We can, probably, use a past perfect form, if the time is not important.
We had fought for our independence.

We can use a manner adverb, if the manner is more impotant:

We had (valiantly) fought (valiantly) for our independence (valiantly).

We can add m-adverb and t-adverb, if both are important:

We (valiantly) fought (valiantly) for our independence (valiantly) in 1776.