Can someone explain to this simpleton why we even have the SEALs when we already have the Marines? Serious question.
The Marines are combat soldiers for beach assaults and other actions,some Marines transfer and are trained as Seals. The Seal training is a wider range of training including medical, parachute training, covert special ops, and others. Marines kill people and break things. Seals are more the special ops types. They do operate together sometimes as well as with other US forces.