1) Accumulating weapons 2) Repositing 3) Reposition 4) Storage 5) Warehousing 1) Amassing 
The storage of something in order to have it available in the future if the need for it increases. In international economics, stockpiling occurs for speculative purposes; by governments to provide for national security; and by central banks managing international reserves.
(from the article `storage`) ...another major need for storage facilities. The basic goals in commercial storage are protection from weather and from destructive animals like ...
The accumulation of chemical weapons (munitions or agents) as reserves.
Building up a stock of goods. This may be involuntary (caused by overproduction e.g. coal) or a matter of policy e.g. in industries where demand is highly seasonal or in defence industries. Stockpiles represent costs that have been incurred but not recover
[n] - accumulating and storing a reserve supply
noun accumulating and storing a reserve supply; `the stockpiling of war materials`