Communication is one of the most influential aspects of a game scenario. Splitting up the party is a lot different in games with no way to communicate between groups than it is in games where everyone has a radio or phone. If the party can communicate freely despite being on opposite sides of the military base they're infiltrating, then they're almost effectively not split up at all.

The major conceptual difference between medieval/historical games and modern/future games is not the weaponry. It's the ability to split up and still stay in communication.

Transcript

Anakin: Padmé... Padmé...
{beat}
{beat}
Anakin: Chancellor Palpatine... hear me...
{Palpatine, on Coruscant, hears Anakin; they communicate via the Force}
Palpatine: Anakin?
Anakin: Help me, Chancellor Palpatine, you're my only hope...
Palpatine: Of... of course.
{Palpatine's shuttle arrives at the still-molten regions of Naboo; Palpatine finds Anakin}
Palpatine: Anakin; it's good to see you alive, albeit in reduced circumstances.
Anakin: Chancellor.
Palpatine: I have need of you.
Palpatine: Well, what's left of you.
Palpatine: And if you happen to know which way your limbs went, I'd be happy to collect them too.