Combat Countdown

On the battlefield, speed can be the difference between life and death. The best speed machines the world's military forces have to offer are showcased.

On the battlefield, the difference between winning and losing often comes down to one thing, firepower. The heaviest-hitting military hardware on the planet is showcased.

When it comes to military hardware, tough is what keeps soldiers alive. The toughest military hardware on the planet is showcased.

Whether the battle is fought on land, sea or air, there is one there that every war machine needs: power. When dogfighting at 50,000-feet or lifting massive loads, horsepower is the decisive factor.

No matter where the battle is fought, there's nothing more fundamental than seeing the enemy before being seen. In offense or defense, getting information fast is what wins wars.

Surprise can be the total deciding factor in war. Getting the drop on the opponent can win the fight before it's begun. The stealthiest war machines across every class of weapon are counted down.

In war, getting, machines men and munitions to the battle-zone is half the fight. Wherever the battle is fought, machines that can haul massive loads are critical to success.

In battle, the ultimate test for any war machine is the battleground itself. Weapons systems that can handle any terrain keep soldiers one step ahead of the enemy. Experts count down the top 10 all-terrain war machines.

In every theater of war, long-range weaponry gives the ability to reach out and touch the opponent while staying out of harm's way. It's a critical edge that can be the difference between victory and defeat.

In modern warfare, the side with the most advanced hardware has a massive advantage, and a technological edge can be the difference between victory and defeat. Experts count down the top 10 most revolutionary war machines.

In battle, fear will break an army faster than any amount of firepower. The world's most intimidating war machines terrify the enemy because they're unstoppable, undetectable or with sheer destructive potential.

The ability to deploy precision strike weapons has completely changed the nature of war. Advances in weapon technology have made it possible to send a missile through a specific window of a building from 1,000-miles away.