1.) Summary: They are making a lot of cannons and they are bringing weapons from abroad. They are also making ship guards work on their days of rest. Marcellus is wondering why their country is getting ready for a battle. King Fortinbras was killed and had to give up all his territories to King Hamlet. Now King Fortinbra's son calls for a battle to get back his father's territories.
2.) Inverted Syntax: "Graves stood tenantless and the sheeted dead did squeak and gibber in the Roman Streets"