Issued weapons only; for all branches of the US Military.
Standards
Yes, Space marines can take off their armor. They stand roughly 6-7ft tall out of it and 8ish in it. When out of armor they wear simple robes. They train, eat, sleep and pray in and out of armor. The armor does connect into the marines body, at the moment of connection the marine knows what has happened to this armor. The same goes for weapons such as power fist's.
The US Marines did not move into a Mexican city to seize weapons from Germany. It is possible that you are referring to a different historical event or misunderstanding the information.
The Marines are part of the Navy. Originally they were solders who fought on ships, hence the name Marines. When pirates would try to take over a ship, Marines would fight against them. Later Marines were also used for land battles.
No. A lot of Marines carry them, but Marines have to buy their own knives just like the rest of us.
Yes, the marine hands are usually considered deadly weapons. This is as a result of the kind of training that they undergo.
a boys scout because it can train you to be active, since teenager it can help you to how it's hard to train to get your own victory just like marines.
No
yes. they can use any weapons that are allowed in the Codex: Space Marines.
sticks with dog poo on the end
No. Delta Force is part of the Army. The Marines have their own special operations forces.
to take care of buisness!