Drill Yard: cost, levels and upgrades

Short answer

The Drill Yard trains your squads harder: every level adds 20% more battle experience.

What it does

Each level of the Drill Yard raises the experience your squads earn from a fight by 20%, rounded up. Squads reach their next level and their mutations sooner.

You can have one Drill Yard per village. It matters most if you fight often with the same veteran squads.

Levels and upgrade costs

Level	More battle XP	Upgrade to next	Time	Expansions needed	League
1	20%	70 scrap, 90 timber	30 min	0	–
2	40%	130 scrap, 160 timber	1 h	0	–
3	60%	585 scrap, 730 timber	2 h	2	–
4	80%	2,625 scrap, 3,280 timber	4 h	3	–
5	100%	5,250 scrap, 6,560 timber	6 h	3	–
6	120%	10,500 scrap, 13,120 timber	9 h	3	Iron
7	140%	20,995 scrap, 26,245 timber	13 h 30 min	3	Steel
8	160%	41,990 scrap, 52,490 timber	20 h 15 min	3	Chrome
9	180%	83,980 scrap, 104,975 timber	1 d	3	Warlord
10	200%	Max	–	3	Warlord

Tips

Build it once you have squads you care about levelling: the bonus applies to every fight.
Veterans are worth more than fresh batches, so every fight the Drill Yard improves is a better bet.

Questions

How much does the Drill Yard cost in Voxhorde?

Building it costs 40 scrap, 50 timber and takes 15 min. The first upgrade, to level 2, costs 70 scrap, 90 timber and takes 30 min.

What is the Drill Yard's max level?

Level 10. Levels past 2 need island expansions: level 3 needs 2 and level 5 needs 3. Levels 6 to 10 also need a league reached at least once: Iron for 6, Steel for 7, Chrome for 8 and Warlord for 9 and 10.

Numbers come straight from the game's rules and update with every release.