They formed the phalanx, and were divided into 6 brigades (raEets), probably on the territorial system.
It was during this struggle that Lord Uxbridge launched two of his cavalry brigades on the enemy; and the "Union brigade" catching the French infantry unawares rode over them, broke them up, and drove them to the bottom of the slope with the loss of two eagles.
The service in the departments comprises brigades, which are actually engaged in guarding the frontiers, and a clerical staff (service de bureau) entrusted with the collection of the duties.
In second line were two brigades and the cavalry (dismounted).
Lee's army consisted of 40 brigades and 59 batteries organized in eleven divisions and an independent brigade four divisions were grouped under Jackson and three under Magruder.