Increase tech researching speed: Assign Eric or Boxer.

Increase building speed: Assign Gingerbread Man-X.

Reduce the cost of Tech Points: Assign Gingerbread Man-X or Gingerbread Man.

Wendy: Assign her to increase rally capacity and attack (battle supporter).

Mother Frost: Assign her to increase Defense and HP (battle supporter).

PS. Assign the officers based on the actual situation. Wendy and Mother Frost are recommended to be assigned to tech department when you deploy units to battle.

Best Group: Amaterasu&Production Expert(S)&Elijah&Forest Elder(battle supporter)

Elijah: Battle supporter

Amaterasu: Assign her to Increase the duration of flag in effect (in battle), gain extra Spray (collect spray), reduce the cost of spray when enhancing units.

Forest Elder: Deploy him in battles to reduce the casualties and increase hospital capacity.

Production Expert (S): Increase Electricity and Metal production.

Advance Group: Amimen&Bunny Girl&Phantom&Production Expert(A)

Amimen: Increase the production of 4 resources. Gain an extra amount of the resource with the highest production bonus.

Bunny Girl: Enhance the effect of Flag (in battle). Increase the production of Spray.

Phantom: Increase the production of Plastic. Gain an extra amount of Electricity and Metal when collecting them.

Production Expert(A): Increase the production of Electricity and Metal.

1.You may need Metal in the later period of development, so we recommend you give priority to officers that have skills related to Metal when assigning.

2.When you are about to engage in a battle, you can assign Forest Elder, Bunny Girl, Amaterasu, Elijah to logistics department. During the peace time, you can assign the officers which increase resource production to logistics department.

Doctor Comedian can help increase the production of all resources。

Best Group: Santa Claus-X&Soldier-X&Spencer(S)&Hunt Master

Santa Claus-X: Increase the speed of training Commando. Gain an extra amount of trained commando.

Soldier-X: Gain an extra amount of trained Artillery and Copter. Enhance Command effect (development supporter).

Spencer(S): Increase the deployment capacity and unit training speed.

Hunt Master: Increase the speed of training vehicle. Also increase the Attack, Defense and HP of Vehicle.

Advance group: Brian(A), enhance the effect of Command.(Battle supporter)

High cost-performance ratio group: Spencer(B)&Stark

Spencer(B): Increase deployment capacity and the speed of training unit.

Stark: Increase the speed of training Artillery and Copter.

Best group: Elegant Lover&Fluffy Bear&Captain Glory(S)&Lu Bu

Advance group: Captain Glory(A)&Reindeer-X&Lynn

High cost-performance ratio group: May&Nelson&Robinson

PS. Only the one that has the highest effect value of the officer skills that are the same in skill effect will go into effect.