The 99th was activated at Camp Ripley near Little Falls, Minnesota. The unit consisted of Norwegians and Americans of Norwegian decent who had a working knowledge of the Norwegian language. Experience with skiing was preferred, but not required. The 99th left Camp Ripley in September 1942 and moved to Fort Snelling near Minneapolis, MN. They trained at Fort Snelling until December 1942 when they boarded a train for Camp Hale, Colorado. They began extensive mountain training at the Mountain Training Center located at Camp Hale.
The 99th saw action in France, Belgium & Germany. They were attached to other units, most notably the 30th Infantry Division. On 25 January 1945, the 99th Infantry Battalion (Sep) was selected to replace the 3rd Battalion of the 474th Infantry Regiment. The 474th had been activated on 6 January 1945 with American personnel from the recently disbanded Canadian-American 1st Special Service Force "Devil's Brigade".
More information and photos on the 99th Infantry Battalion (Separate) can be found at:
99th Infantry Battalion (Separate) website
99th Infantry Battalion (Separate) on Facebook
Old Hickory 30th Infantry Division website
VIDEO - 99th Infantry Battalion in Malmedy