“Union in life, union in death”
unioni modo atque post humum insumus.
1. unioni = “(to our) Union” here in dative singular but classical Latin noun unio has also been correctly demonstrated to mean “carnal intercourse”!
2. modo = “now” somehow more appropriate to use in the ordinary slogan or motto than synonymous jam or nunc.
3. atque = “and even” consecutive speech element designed to build upon the preceding narration.
4. post humum = “after we’re dead” which best illustrates this congenial Latin tendency of making one very subtle understatement: “after burial” so obtained by glossing every word for redolent word.
5. insumus = “we belong” where ordinary Latin copula sum “(I) am” becomes copulative here with adverbial prefix in “in” and so takes oblique noun unioni “to the union” a classic dative of explicit reference.
“To our Union we now belong & even after we’re dead!”