Insignia of the Crusade

Insignia of the Crusade is one of two insignia needed for the quests Armaments of the Dawn. It is also used to obtain special head and leg enchants.

Source
Insignia are earned by turning in drops to NPCs located in and around the Light's Hope Chapel Inn.

Bone Fragments

 * NPC: Rohan the Assassin
 * Items: 30 Bone Fragments
 * Drop Location: Western Plaguelands, Eastern Plaguelands, Dire Maul, Stratholme and Scholomance.

Crypt Fiend Parts

 * NPC: Huntsman Leopold
 * Items: 30 Crypt Fiend Parts
 * Drop Location: Eastern Plaguelands, Stratholme, Scholomance and Anub'shiah in Blackrock Depths.

Savage Frond

 * NPC: Rayne
 * Items: 30 Savage Fronds
 * Drop Location: Felwood, Feralas, Un'Goro Crater, Dire Maul, Maraudon.

Craftsman's Writ

 * See the section on Craftsman's Writs.

As a quest objective
The amount of Insignia needed vary by quality of the goods and your current standing with the Argent Dawn:
 * [60] Armaments of the Dawn Turn in various amounts to Miranda Breechlock for rare and epic rewards
 * The Ice Guard Turn in 10 Insignia of the Crusade and to Mataus the Wrathcaster for an Ice Guard, a +10 frost resistance enchant
 * The Shadow Guard Turn in 10 Insignia of the Crusade and to Mataus the Wrathcaster for a Shadow Guard, a +10 shadow resistance enchant