Analysing Conventions of Opening Sequences 2 - 'Full Metal Jacket'

The second opening scene is from the war movie 'Full Metal Jacket', directed by Stanley Kubrick, which includes the following conventions:

• Production company logos (Warner Brothers)
• Titles/credits (the name of the film)
• Indication of genre (war) 
• Creates enigma - we are introduced to a number of characters getting their heads shaved, but there is no indication who the main characters are and no development of their character traits