Tuck away extra troops to change your army quickly or rebuild faster.
One of the most annoying things about CoC is that (outside of Clan Wars) you have no intel on bases until you're there and it's to late to plan an army. The Reserve Station allows you to remove a small percent (no more than 25%) of your army so that you can change it without throwing away the time and Elixir spent to train troops. In addition to normal time at your base, the Reserve Station menu is accessible during the 30 seconds prior to battle when you can exchange troops to increase or decrease your forces as needed. The hope is that this will reduce the use of the Next button and encourage more attacking do to versatility and better cost/reward options.
BArching not enough firepower for that stronger base? Exchange those Barbarians for that Dragon you reserved! See a smaller base but don't want to waste powerful troops? Downsize and send in the expendables. Enemy Mortars clustered together? Time to dust off that spare Lighting Spell. Want to wait out a shield with some single player raids? Pack up those PEKKAs for a rainy day and GET THOSE GOBLINS!
RS - TH - Space - Elixir - HP - Spell
1 - - 4 - - - 25 --- 80k -- 280 -- 0
2 - - 5 - - - 35 - - 250k - 300 -- 0
3 - - 6 - - - 40 - - 650k - 325 -- 1
4 - - 7 - - - 50 - - 2mil - 355 - - 1
5 - - 9 - - - 60 - - 6mil - 390 - - 1 (2?)
NOTE: This is NOT a second Clan Castle. Reserve troops will not defend your base and cannot be deployed directly to aid attacks. Once the first troop hits the ground, the Station is closed. Army Camp and Spell Factory limits still apply to combat.

