The Ghost Army was a part of the U.S. Military that was tasked with creating a diversion for German troops to believe U.S troops were preparing an attack on a different beach as opposed to Omaha and Utah Beaches.  They used dummy and inflatable tanks and makeshift barracks to fool the Germans. Also, they used actors, carpenters, set designers, etc. to create this elaborate ruse.  They also used speakers to amplify the sound to make to seem that hundreds of tanks were moving in the area. It actually worked!

A light tank used by the U.S. Military during WWII. Its significance lies in its ability to be mass produced as compared to tanks such as the Tigers used by Nazi Germany. So even though better performing tanks existed having dozens of Sherman's sent at one time led to success.

A recon group for the U.S. Military that operated in North Vietnam tasked with gathering intel.  They committed atrocities across North Vietnam terrorizing civilains.

​During World War II, the British Armed Forces planned on constructing an aircraft carrier made completely out of Pykrete. Pykrete is a frozen compound made out of sawdust and water, and is surprisingly durable for its components, hence why they felt it could be a successful replacement for steel. They planned on using this Pykrete aircraft carrier to combat German U-boats. This project fell through eventually, because it was expensive and the British were able to solve the problems faced in other ways, but it was an interesting concept to try and create an aircraft carrier out of such odd materials.