[LeoWindhorse]

Filthy Yankee dogs.
GERMAN immigrant staffed ranks of northern westerners. Invaded my state, in the rudest and most illegal of manners. They stole our livestock, ate all our chickens, tore down our fences, burned our houses and barns, destroyed our stores. They rendered my neighbors homeless and displaced persons. By virtue of their Springfields, swords and bayonets.
Rotten bastards , we will never forget . A pox upon your ancestors, eternally. Deo Vindice.

[BroJoeK]

LeoWindhorse: "Filthy Yankee dogs. GERMAN immigrant staffed ranks of northern westerners."

One recent Union immigrant was my great-grandfather.
In late December 1862 he and his company surrendered without a fight while guarding US Grant's supply lines along the Mobile & Ohio Railroad in Tennessee.
Their captor was Confederate cavalry commander, Nathan Bedford Forrest, who soon released them all on "parole", meaning they would serve their captivity in a Union POW camp, until released by prisoner swap for Confederate POWs.

So as of "today", January 19, 1863, my Union great-grandfather is sitting in a Union POW camp in St. Louis.
In due time he will be released temporarily to go home and help on his family's farm in Illinois.

In my opinion, Forrest's actions in releasing those captured Union immigrant soldiers will be repaid when they release Forrest from capture or death in a future battle.

As for which army caused more civilian destruction, the Union army was almost always supplied from official Union resources, while Confederate forces more often "lived off the land", especially when they operated in Union states & territories.