by september 1863, mcgehee's company had joined with other semi-independent companies under colonel archibald s. dobbins to form dobbins 1st arkansas cavalry regiment. mcgehee's company became company c, and probably remained with the regiment unit for the winter of 1863 when colonel dobbins was court-martialed and dismissed from the service because he refused to accept orders from general john s. marmaduke because marmaduke had killed brigadier general l. m. walker in a duel just before the battle of little rock. the official records indicate that the regiment was broken up about january 3, 1864, and elements of the regiment were attached to, but not formally consolidated with, col. thomas j. morgan's regiment. it may be that this is the point at which mcgehee began organizing his own regiment.