Brown formed a legion (which meant at the time a combined arms unit) from the remaining light infantry and cavalry battalions, commanded by Phillips. It initially consisted of a six-company infantry battalion, including the late addition of an all-Irish company known as the Lochrane Guards from Macon, and a four-company cavalry battalion. Brown's request for the artillery battalion to be included was denied by Davis. The legion was accepted into state service in July 1861, and Phillips appointed its colonel the following month.
