Our army is small but it has, over the years, proved effective.

After a bitter fight, Morelos' army proved to be victorious.

You don't need an army and your own private world to prove that.

Peru's own army, notorious for human rights abuses, has proved ineffective and a danger to democracy itself.

Because they believe that their combined armies will prove sufficient.

The Hussite Wars continued from 1420 to 1434, by which point the army had proved its worth.

But the army may prove to be an obstacle.

If the army could have proved that, he'd have been out on his duff.

The army has proven to be a wild card in the past.