How long, how much, and what it's worth — training or promoting.
Each tier has a fixed time per troop — 12 seconds for T1 up to 152 for T10 and 180 for T11 — and your camp's Training Speed divides it: time = troops × seconds each ÷ (1 + speed %). I checked it on my own Infantry Camp: 1,413 T10 at +245.7% came to about 17 hours, the same as the queue timer.
Your speed is under the camp's Details. Minister of Education (+50%), Vice President (+10%) and Mobilize (+30%) are already in that number while they're active.
A promotion costs exactly the difference between the two tiers — time, resources and points. The gaps between tiers are uneven, so some promotions score far more per minute than training fresh troops: T9 to T10 takes 21 seconds for 15 SvS points, roughly twice as efficient as a new T10. The calculator points out the best option at your speed.
T10 and T11 gain power as the camp passes FC1 — a T10 at an FC8 camp is 110 power instead of 66 (also checked in game). For SvS, troops score on day 4 when training finishes that day, so long batches can start on day 2 or 3.
FC Crazy's free account reads your screenshots instead: your real totals, what's blocking your next upgrade and what your stash is worth — and you can ask it questions about your own account.
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