I don't know much about researching wars and veterans but I need help in finding out if a man did serve in the Mexican War. Where can I find records etc.? His name is Frederich August Gausman, 1826-1890. His headstone reads: Co. K, US Mtd. Rflmn". He would have been 20 years old in 1846, the year the US Mounted Rifles began. I am having trouble finding any records for him and I have tried many variations of his name. He is buried in Woodbury, MN, which is in Washington County. Anyone who might be able to help?