This page has been created to record the findings of attacking NPCs with just Catapults and Transporters. The number of transporters is covered well in other articles, so this mainly concentrates on the number of catapults needed.
I will be recording my experiences as my single Level 10 Barracks produces my Catapults (Cats). I will be using a hero with an attack of 91 and will keep him at that level for the duration of this testing (His name is Samson if you wanted to know). I have Archery at level 10 and Horse Back Riding at level 9 (I heard that if you upgrade to level 10 you start taking Ballistae losses against NPC 5's...wierd). I'm building the Cats in sets of 50, so you'll see the numbers aren't too accurate just yet. Lets get started.
As you may expect, this involved small numbers. 10 Cats and 20 trans cleaned the place out.
Here I used 60 Cats and 100 trans. I may have gone over-board on the trans, but i'd rather be safe than sorry!
I tried 60 Cats, but the fight went to 100 rounds. 110 Cats do the job fine.
NPC Level 5
Here I suffered my first losses. I sent 160 Cats and 450 trans and lost 16 Cats.
190 Cats gets a similar result, 18 Cats lost.
300 Cats = no losses (finally)
NPC Level 6
1st attempt = 1000 Cats, lost 127