In a fun note: enough Tanks to shame General Patton.
In a Military note: Nothing but what the Government gives me.
As a Mercenary: 3 full sets of a Camo Pattern uniform that matches the terrain, one for hot, one normal and one Smock for cold weather, a G36 because that thing never breaks, 20 magazines which fit nicely into my 5 double G36 Magpouches (the others are in the backpack in case i need all that extra ammo) straped to the Dragonskin Vest i´ll be wearing. Plenty of Food and Water and Ammo (you can´t have enough of those).
Something to entertain me with? Theres plenty of people to shoot, what would i need more entertainment harhiharhihar...
And a survival Kit containing a wiresaw, a magnesium lighter, a knife, some matches, signal flare, map, compass, GPS, vodka, bandaids, bandages, needle, surgical string and a device that turns piss into drinkable water...
That´d be all...
Oh and a Backpack to fit those things too.