The Civil War and the American War as well famine and unrest in Ireland brought an influx of Irish to North American. Whether fleeing persecution in Ireland, being recruited into the armies, or to live in colonies previously established as Irish, they numbered in the the tens of thousands. Many young men were enlisted into the combatant armies as soon as they got off the boat, their families left to find their own way in a strange land. After the Armistice in 1867 the great armies were disbanded and Irish veterans had to track down their families. Irish immigrants have formed enclaves and neighborhoods in many cities, towns and work camps across the American continent. New York's Five Points district in Manhattan, Saint Paul, Minnesota, The Boston area, the Irish Channel in New Orleans all being the largest concentrations of Irish population. In Texas the Irish have formed communities to support the local cattle ranches and cotton plantations. Towns such as Refugio and San Patricio are almost wholly Irish and Mexican.
Separated by culture, language and religion the Irish have faced adversity in America. Banding together into dense communities the Irish have fallen prey to unscrupulous factory owners and crime bosses. Irish operated organized crime has risen in return in some cases fighting hard for fair wages and treatment of their fellow Irish in others being just as cruel and exploitative as the American bosses and goldbrickers. In New York and throughout the Union the "Roachguard", known to the newspapers as the nick-name "The Dead Rabbits", hold the widest territory. In New Orleans the "Lively Oak Boys" and their allied populist organization "The League of Irish Voters" holds great sway in the city and surrounding region. Dozens, if not hundreds of small gangs, bands and businesses fill in the cracks of the East and the Disputed Territories, often allied to the larger gangs by common heritage or county of origin.
The Irish make up one of the largest demographics migrating into the Disputed Territories seeking a new life beyond the squalor, crime and toil of the eastern cities. Irish settlers, homesteaders, laborers and prospectors fill out the frontier camps. Following after them are the first expeditionary businesses run by Irish gang affiliates. There are no laws and no taxes in the Disputed Territory a perfect environment for entrepreneurs and scoundrels.
Most recently a group of Lively Oak Boys were gunned down in the Lazarus Camp of the Black Hills prompting a reprisal from the gang. A leader calling herself "Nancy Whiskey" led a large mob of Irish gangsters into Lazarus to throw out Finn Kelly a local New York Irish saloon operator held for blame over the murders. In a no-guns, stand up mass pitched brawl the folks of Lazarus defeated the Lively Oak Boys and prevented the hostile takeover of many of the businesses of the camp by the gang.