is there a when new weapons become available tree that is...similar to the Campaign Tree?

[scorehouse]

reason is I'm almost done and can't remember when the 44 Henry first became available? a unit in good cover armed with those works wonders.  I can't remember around which battle they were first offered? or any other weapons I passed over that  I should have started accumulating? a weapons timeline and/or new weapons that r a must use please post/recommend? thanks

[pandakraut]

The Henry appears in small numbers relatively early on in the campaign. The store stocks reset after every major battle, so some weapons have to be bought up over time before you have enough to use them.

I don't think anyone has documented the amounts of weapons available after each battle.