Free/F2P medal sources ranked. Traded Goods (Trade Products) Event: 500 medals -- needs 200 replacement items (earned via quotas for resource production, alliance donation, stamina consumption, troop recovery, alliance rally participation; low difficulty if you play daily; healing wounded troops speeds the quota). Viking Event: 50 easy Vikings for 182 medals (one per kill; Lv1-19 = 3 each, Lv20-49 = 4, Lv50 = 5); with a high double-drop general (Baibars + King's Ring) nearly 300. Hunt low-level normal monsters and bosses: normal monsters always drop medals regardless of level -- farm the map edge with multiple marches. For bosses, medals are in the chest only for low-to-medium level; HIGH-level bosses do NOT drop medals (Lv1 Zombie/Redcap/Centaur = 2, Lv4-6 = 3, Lv7-9 = 4, Lv10 Griffin = 5; Lv11+ N/A). Garuda: Junior 5, Senior 8, Excellent 20. Royal Thief 4. Lava Turtle, Witch, Bayard do NOT drop medals. Paid: Black Market Medal x100 = 7,000 gems, x200 = 12,000 gems. For a bot, medals (used to promote generals) are best farmed by hunting low-level normal monsters/bosses at the map edge with a double-drop general, plus the daily Trade Products quota.
Original research source: Evony Guide Wiki