"Downloading" classified material is a crime. The Guardian is publishing classified material. Ergo: No access to The Guardian for you, dear soldiers.
Via the Monterey Herald:
Gordon Van Vleet, an Arizona-based spokesman for the Army Network Enterprise Technology Command, or NETCOM, said in an email the Army is filtering “some access to press coverage and online content about the NSA leaks.”
He wrote it is routine for the Department of Defense to take preventative “network hygiene” measures to mitigate unauthorized disclosures of classified information.
"We make every effort to balance the need to preserve information access with operational security," he wrote, "however, there are strict policies and directives in place regarding protecting and handling classified information."