"When Fort Sumter was fired on, the early Iowa regiments were self financed with gray uniforms. They didnt think of being a part of the Union Army, they planned to attack the Confederacy on their own."
Thanks for looking that up and confirming my opinion that gandalftb never claimed the Iowa militia would "take up arms against the other slave states."
Clearly the word gandalftb used was "Confederacy".
Missouri was a Union state, as you well know.
Of course there were many battles fought in Missouri as Confederates attempted to win by force what they could not win with votes, and it's likely only luck which kept gandalftb's ancestors out of that particular fight.