Apprentice grenadier- you must set grenades then protect the sniper when you have this rank. you are taught the skills of grenading by a higher level grenadier. you cannot participate in any clan matches and must be tested to get to a higher rank.
grenadier - you are now able to be in clan matches and are able to teach a grenadier apprentice.
elite grenadier - you are now the highest rank and have the right to make your own team.