Combat
Typically requires you to kill 30 elite Silithids, you might want to bring a friend or two for these.

Tactics
Some requires you to kill an Abyssal Templar others requires you to seek out Scouts at various locations.
Might require a small party.

Logistics
Involves the collection of various items, probably the easiest to complete solo.

When you turn in the signed field duty papers you chose either tactical, combat, or logistic quests.&nbsp After you complete your quest you are given a follow up quest.&nbsp Below are all the possible orignal or follow up quests.&nbsp It is completely random which one you will get, sometimes you get one you already have.

Tactical (summon templar or scout report)
I--Azure Templar
III--Earthen Templar
VI--Hive'Zora Scout Report
VII--Hive'Regal Scout Report
IX--Twilight Marauda (not soloable)

FOLLOW UP ASSIGNMENTS
II--Crimson Templar
IV--Hoary Templar
VIII--Hive'Ashi Scout Report
X--Twilight Battle Orders (not soloable)

Combat Quests (kill 30 of ....)
I--Hive'Ashi Defenders
III--Hive'Ashi Workers
V--Hive'Zora Sister
VII--Hive'Zora Tunnelers (sucks)
IX--Hive Regal Spitfires
XI--Hive Regal Burrowers (sucks)

FOLLOW UP ASSIGNMENTS
II--Hive'Ashi Sandstalkers
IV--Hive'Zora Reavers
VI--Hive'Zora Waywatchers
VIII--Hive'Regal Ambushers
X--Hive'Regal Slavemakers
XII--Hive'Ashi Stingers

Logistics Quests (gathering)
I--4 Globe of Waters
&nbsp 4 Powerful Antivenoms (requires Huge Venom Sac)
&nbsp 4 Smoked Desert Dumpling
II--3 Ornate Mithril Boots
III--10 Dense Grinding Stones
&nbsp &nbsp 10 Solid Grinding Stones
&nbsp &nbsp 10 Heavy Grinding Stones
IX--2 Enchanted Thorium Bars
&nbsp &nbsp 2 Enchanted Leather
VIII--1 Mooncloth
&nbsp &nbsp &nbsp 2 Bolt of Runecloth
&nbsp &nbsp &nbsp 1 Ironweb Spidersilk

FOLLOW UP ASSIGNMENT
IV--6 Oil of Immolation
&nbsp &nbsp 5 Goblin Rocket Fuel
&nbsp &nbsp 10 Blasting Powders
V--1 Large Brilliant Shard
&nbsp 1 Large Radiant Shard
&nbsp 1 Huge Emerald
VI--2 Moonsteel Broadswords
VII--8 Rugged Armor Kits
&nbsp &nbsp 8 Heavy Armor Kits
X--30 Heavy Runecloth Bandages
&nbsp 30 Heavy Mageweave Bandages
&nbsp 30 Heavy Silk Bandages

Couple of Hints:
1. Get as many combat quests and and the scout report for a hive before going in.&nbsp Take a group to speed it up.
2. Before summoning the templars make sure you have all the Tactical Quests I-IV so you get an extra 50 rep and a badge for each summons.
3. If you don't like the quest given to you, run back and do it again.&nbsp It's worth the extra time repeating the field duty paper quest to get a quest you like.

If you want more information about Cenarion Circle rep a guildie sent me here.&nbsp It's a bit depressing, so be forewarned you're signing your life away.

http://wowwiki.com/Cenarion_Circle_Reputation_Guide 

SINCE THE PATCH SOME OF THIS INFORMATION IS OLD.&nbsp FOR EXAMPLE, THE UNSIGNED PAPERS MUST BE RIGHT CLICKED.&nbsp COMBAT QUESTS GIVE YOU A CLUSTER OF 4 FOR THAT HIVE.&nbsp TACTICAL V WAS ADDED (KILL THE FOUR DUKES) WITH A NEW REWARD MARK OF CENARIUS.&nbsp NOT SURE WHAT ELSE HAS BEEN ADDED.

The sequence is:

• Get unsigned papers from questgiver.
• Talk to Krug Skullsplit (by Hive'Royal). This spawns a big bug (Hunter-Killer)
• Kill big bug.
• Right-click the papers to "prepare" them.
• Talk to Krug again. He will sign the papers.
• Return to Cenarion Hold for random assignment that produces a badge when completed.

As of 1.11, Krug can die during the fight, then respawn after the bug dies, at which point he gets the blue question mark and will sign papers. Previously, he would not sign papers after a respawn.

You only need to do this three times (for tactical, combat, and logistics assignments). Once you get a badge, you get a random follow-up assignment of the same type for free. However, it may be to your advantage to have multiple combat assignment quests active at once, as you'll be killing different kinds of bugs anyway.

The bug is 5-man boss-level difficulty, but does not have typical boss-style immunities. All normal abilities should work on it. It uses AoE fear, cleave, and an AoE snare. It will also charge a random player character periodically. Drain its mana and do not wander into nearby mobs if you need to run away.

Edited, Thu Apr 6 12:15:12 2006

Edited, Jul 7th 2006 at 3:08pm EDT by Kathucka

You need to right click the papers to prepare them. It looks like some people aren't doing this. Then let all the NPC's battle the mob. After the battle, talk to him again.

The guy you need to go to for the horde side is located at 52,68