Army, Navy, Air Force, Marine Corps, Coast Guard (can be transferred to DoD during wartime), Space Force (established in 2019) and Coast Guard Auxiliary (civilian volunteer component)

How many military service branches are there in the U.S. Department of Defense?

The U.S. Army is the largest military branch in the U.S., with roughly 450,000 active-duty soldiers

Which is the largest branch in the US?

The Air Force tracks Santa Claus every Christmas Eve through NORAD https://www.noradsanta.org/en/

Who is in charge of tracking Santa Claus every Christmas Eve?

What does MRE means in the Military?

Which animal helps detect underwater mines and protect ports?

Duct tape, Super glue, Internet (ARPANET) and Jeeps

Many everyday items were originally developed for military use, including:

By tradition, the Marine Corps mascot is always an English bulldog named "Chesty"

Who is Chesty?

The military invented M&Ms as heat-resistant chocolate for soldiers

Which chocolate was invented for the soldiers?

U.S. Army's WWI hero pigeon, Cher Ami, saved 194 soldiers by delivering a crucial message that stopped friendly fire