The MSM was previously awarded as a decoration for achievement during peacetime, but effective September 11, 2001 this decoration may also be bestowed in lieu of the Bronze Star Medal for meritorious achievement in a designated combat theater. Normally, the acts or services rendered must be comparable to that required for the Legion of Merit but in a duty of lesser, though considerable, responsibility. Within the U.S. Army, according to AR 600-8-22, Paragraph 3-16, the MSM may not be upgraded to or downgraded from a recommended Bronze Star Medal. In the Army, an MSM recommendation that is downgraded will be approved as an Army Commendation Medal (ARCOM).