re-armament 

When an individual, organisation or government seeks to rebuild thier fighting power from a drastic fall.

Germany's re-armament

re-armament by Gumba Gumba May 13, 2004

Rearmament 

Building up a new store of weapons, or replacing old weapons with better ones.

When you're preparing for war, you need to go through a rearmament.

Rearmament by Jafje May 25, 2007