Commander's Plate armor set

Description
The Commander's Plate Armor set is an extremely rare set of massive armor and is fairly easy to miss. It is the same model as Loghain's, and only a select few characters are seen wearing it, most notably Eamon during the final battle.

How to get complete set
The set pieces can be found as random loot in four specific locations: The chest that contains Arl Eamon's Shield in the Redcliffe Castle vault, Raelnor's corpse after you defeat him during the A Change in Leadership quest from the Blackstone Irregulars, a cabinet in the Deserted Building in Denerim, and a cabinet in Bann Franderel's Manor's vault at the end of the Crime Wave quest. Since all pieces are random loot, make sure you save before: This way you will be able to try again in case the armor pieces do not appear. NOTE: Unlike the Chevalier Armor, wearing pieces of the Commander's Plate Armor will not increase the chances of remaining pieces appearing in these locations, which means you may have to reload several times.
 * Entering the upper floor in Redcliffe Castle.
 * Confronting Raelnor.
 * Entering the Deserted Building.
 * Entering Bann Franderel's Manor the second time.
 * Entering Orzammar at foot of Frostback Mountain (yellow named merchant at bottom of stairs)

NOTE: I also came across a commander plate armor item on the main floor of Fort Drakon during the final battle(not the Landsmeet). It was in the chest in the last small room right before you get to the room Sandal "Enchantment" is in.

I found the gloves in Ostagar (thanks to the DLC) too.