The U.S. Department of Defense released an in-depth report on North Korea’s military, breaking down a lot of previously unknown information about the combat capabilities of the pariah nation.

The annual report, entitled "Military and Security Developments Involving the Democratic People’s Republic of Korea," describes the nation as one of the country’s “most critical security challenges.” The report delves into the North’s nuclear provocation and disregard for United Nations Security Council sanctions.

In the report’s fourth chapter, the U.S. sizes up North Korea’s military prowess, outlining the specifics of the country’s ground, air and naval forces and revealing locations and capabilities of the Korean People’s Army.

Seventy percent of the KPA’s ground forces are stationed strategically in strike position within 100 kilometers (62 miles) from the demilitarized zone (DMZ), the border that separates North and South Korea. Ground forces include long-range cannons and other artillery that have the capabilities to reach South Korean territory.

DPRK ground forces
North Korea's ground forces mapped by the U.S. department of defense. Department of Defense
DPRK air forces
North Korea's aircraft forces mapped by the U.S. department of defense. Department of Defense
DPRK naval forces
North Korea's naval forces mapped by the U.S. department of defense. Department of Defense