The day of the parade I had to look up the unit history of the 170th Infantry Bde, parent of the 2/18, because I had never heard of them.
I was pleasantly surprised to find out that the 170th had actually been sent to Russia at the end of WWI and ended-up being the only US Army unit to fight the Bolsheviks on Russian soil.
I thought that was a pretty cool trade-off for marching in Red Square :-)