Such detailed knowledge is not necessary in order to have a general idea of the temporal cold - and occasionally hot - war.
Just as it's not necessary to have detailed schematics of a tank to know how it is used in war.
This general idea was pretty well explained:
Multiple factions have agents stationed across the time-stram*. The strategy is MAD - if one faction attacks, the other counterattack, destroying the past of all. It's cold war.
We even saw how hot temporal war looks like in 'Storm front'.
*Presumably, temporal shielding plays a role in ensuring the continued existence of effective counteratack forces upstream, etc, etc.
PS - yes, with time travel you can meet your past self. Not necessarily a paradox; just weird.