Attacking flats and valleys with scouts is a quick way to farm for low level medals.
Recommended troop numbers when attacking flats and valleys with scouts:
Level 1 flat/valley: 100 scouts
Level 2 flat/valley: 200 scouts
Level 3 flat/valley: 300 scouts
Level 4 flat/valley: 500 scouts
Level 5 flat/valley: 1000 scouts
Recommended troop numbers when attacking flats and valleys with warriors only:
Level 1 flat/valley: 75 warriors
Level 2 flat/valley: 125 warriors
Level 3 flat/valley: 250 warriors
Level 4 flat/valley: 400 warriors
Level 5 flat/valley: 850 warriors
Level 6 flat/valley: 2500 warriors
Level 7 flat/valley: 4000 warriors
Level 8 flat/valley: 6000 warriors
Level 9 flat/valley: 10,000 warriors
Level 10 flat/valley: 15,000 warriors
Recommended troop numbers when attacking flats and valleys with archers (we recommend sending archer attacks with one scout, warrior, pike, or swordsman to reduce losses):
Level 1 flat/valley: 50 archers
Level 2 flat/valley: 100 archers
Level 3 flat/valley: 200 archers
Level 4 flat/valley: 400 archers
Level 5 flat/valley: 750 archers
Level 6 flat/valley: 1500 archers
Level 7 flat/valley: 3000 archers
Level 8 flat/valley: 7500 archers
When attacking NPC cities, it is recommended to use ballista on levels 1-5 with 100 ballista per level of city. Your archery technology level should be at least one level higher than your horseback riding technology. You will not take any troop losses at all when this is followed. Do not attack NPC cities with ballista beyond level 5 as you will always take losses.
Level 1 NPC city: 100 ballista
Level 2 NPC city: 200 ballista
Level 3 NPC city: 300 ballista
Level 4 NPC city: 400 ballista
Level 5 NPC city: 500 ballista
As your archery technology goes up, you will be able to use fewer ballista and still get no losses.
Recommended troop numbers when attacking NPC cities with warriors only:
Level 1 NPC city: 1000 warriors
Level 2 NPC city: 2500 warriors
Level 3 NPC city: 10,000 warriors
Level 4 NPC city: 20,000 warriors
Level 5 NPC city: 28,000 warriors
Level 6 NPC city: 35,000 warriors
Level 7 NPC city: 55,000 warriors