National defense (disambiguation) explained

National defense is a nation's use of military, economic and political power to maintain survival.

National defense or national defence may also refer to:

• National Defense (Poland), a volunteer military formation of the Second Polish Republic
• National Defense (magazine), a business and technology magazine published by the National Defense Industrial Association
• National missile defense, a military strategy to shield a country from missiles
• Movement of National Defence, a Greek government during WWI

See also

• Ministry of defence, part of a government responsible for matters of defence
• National security (disambiguation)
• Defense (disambiguation)
• National Defence Academy (disambiguation)
• National Defence University (disambiguation)