Beverly,
I was surprised to hear that I had a roster of the 77th Enrolled Missouri Militia. Actually, I don't have such a roster. But, the MO Sec't of State's Office does in their digital or online searchable database of soldier service records

I used the Missouri Sec'y of State's website (using Google.com to find it.), then looking in the Missouri State Archives soldiers records from the War of 1812 through WWI. I called up the 77th EMM and did discover a record for a William Gantz who enrolled in Company C of the 77th in August 1862 at Kansas City. Private Gantz was ordered into active service, probably in KC on October 22 that year, but was discharged 2 November 1862 "for being a foreign subject." That puzzles me a lot. See below.

I wonder if his other Ganz relatives--perhaps Herman and Bernard--tried to enroll, too, and were turned away based on William's experience as also being citizens of another country. I find this strange, as my impression of the EMM was as long as you weren't a Reb and passed the mirror test, you were in! The mirror test is and Old Army Joke, but I hope you see my point. The purpose of the EMM was to provide the northern cause in Missouri with an emergency army that they badly needed, and they were careful not to send away anybody if they could help it. I wonder if the Ganz men could not speak English and there were not enough German-speakers in the 77th to cope with the language barrier.

I found a number of other Gantz men who served in other EMM units and other units, but no closer than Stewartsville in south Buchanan County two counties north of Kansas City on the north side of the Missouri River. It appears that Casper, Franz, and Frank F. G Gantz of Stewartsville served in the 25th EMM, 87th EMM, and the 43rd Missouri Infantry Volunteers all on the Union side.

Maybe I should have tried looking up Ganns and other spellings. However, I called up a roster of the 77th EMM and William Gantz in the second paragraph is the only one listed under any similar spelling in the 77th EMM. There was no GANZ in the database for the Civil War period, spelled that way in ANY other unit, Union or Confederate.

I see according to the index for the 1860 census that a Harmann Ganz is listed on page 109 of the census-taker's book in the Westport area near Kansas City in Jackson County. Perhaps this is your Herman Ganz, right?

Sorry I couldn't come up with anything more solid for you.
Bruce Nichols