Note: This guide is not a direct rule to follow and players can train their crew according to their personal preferences, selecting perks and crew skills to their favoured tactics. This configuration is provided as an example of how the crew skills and perks can be used on various vehicle types.
General Skills and Perks
Besides various skills and perks, a player should also not neglect crucial basic skills, such as repair and camouflage, elements which are vital for about a half of all in-game vehicles.
Please note that if one of two crew members with same qualifications have one perk (or skill), then the more researched one will prevail. Thus, if you have 2 loaders or radio operators, it is better to train different skills or perks (except for repair, camouflage, firefighting, intuition and brother-in-arms).
In fact, it’s hard to give advice on what skills or perks should be applied to a certain tank, as each player has his/her own tactics and even the gun selection can provoke arguments. It's much harder when it comes to skills and perks. The only rule to follow is to think carefully before you train the crew: determine which skills are necessary for the vehicle, plan the training perspectives, and follow the chosen combat tactics in game. Read comments on forums, watch VODs and check up other sources with useful advice.