Rank: The rank of your character, if he is/was a part of an organisation.
Name: Your character's name, anything between a nickname and full Christian nameset
Date/Place of birth: Self-explanatory
Character history: Your character's short biography before signing up. Updateable as the RP progresses.
Appearance: Physical appearance
Gear: Clothes, bags, LBE, and other related stuff your character has on them for the excursion.
Weapons and equipment: Self-explanatory
Role: The role this character fills in his organisation.
Miscellaneous: Anything else

Everything can be as much or as little as you like.

Empty sheet for convenience:

Rank: 
Name: 
Date/Place of birth: 
Character history: 
Appearance: 
Gear: 
Weapons and equipment: 
Role: 
Miscellaneous: