This quest should be done consecutively with Implements of War
For Step 1 of the quest, you'll require Hogni Cleave-shank's spiked helmet and 12x Steam-scorched carapace
Hogni Cleave-Shank is a Signature Dwarf prowling near an Elite Giant and another Signature Dwarf. Just pull him away from them.
The Steam-scorched carapaces can be found in Angmar, dropped from Corrupted Neeker-Breekers around Duvulmen, beside Malenhad on the World Map. Also, do farm these bugs until you get 20x Corroded Neekerbreeker Horn. This is for the next step in Articles of Command.
Consecutively, you can collect 8x Nasty Snowreap-knife in Misty Mountains from goblins and Fakhthal's Jagged Blade in Angmar.
Please note, when farming Corrupted Neeker-Breekers, farm the surrounding Level 48 flaming worms as well for 15x Hateful Worm Eye. This is for the next step in Implements of War.
For Step 2 of Articles of Command and Implements of War,
Assuming you already have 20 Corroded Neekerbreeker Horns and 15 Hateful Worm eyes, all you need are 20 Grisly Bat Talons and 15 Coiled Spider Spinnerets as well as 5 Barghest Paws.
I really suggest you just head to the Auction house for these items because they're a chore to get (especially the Barghest Paws), but assuming your local AH is out of stock, head to the LOTRO Store, and purchase a Map to Angmar - Gath Forthnir for 50 Turbine Points and head south-west of the town. You'll find plenty of spiders and bats to kill.
Barghests can only be found in the instance of Forochel, or you can have a go at Howling Barrow-hound, found in Southern Barrows, Bree.
Edited, Nov 4th 2011 9:59pm by benlee105