After a brief quiescence, the secret-spilling website WikiLeaks is about to explode again onto the global stage with the impending release of almost 400,000 secret U.S. Army reports from the Iraq War, marking the largest military leak in U.S. history.

Measured by size, the database will dwarf the 92,000-entry Afghan war log WikiLeaks partially published last July. “It will be huge,” says a source familiar with WikiLeaks’ operations,