Final answer:
The security of classified military information is a command responsibility for army leaders, soldiers, and DA civilians/contractors, making 'All of the Above' an incorrect completion of the statement.
Step-by-step explanation:
The security of classified military information is a critical concern that encompasses various personnel including army leaders, soldiers, and DA civilians/contractors. However, the question asks for the personnel for whom it is not a command responsibility. Based on the options provided, 'All of the Above' would not be the correct answer since security of classified information is indeed a command responsibility for all the groups listed. Instead, the question seems to be incorrectly structured as all the options given are typically responsible for the security of classified information.