I know this is kind of a necro post. But since I am actually part of the 86th IBCT, namely the 3/172 Infantry regiment (Mountain) figured id comment on this.
We just got back in the beginning of December after a year long deployment.
We have been wearing this patch since Late 2006 early 2007 when the 86th IBCT (Mountain) was created under the Armys restructuring plan of IBCT's. We are the only mountain specific IBCT in the Army's tool box. The 10th Mountain is light infantry.
Before we wore this patch the unit wore the first army patch with the mountain tab. At the t