Seems to be mostly from one set with a mixture of Minifigs and accessories.
Set #10195-1 Republic Dropship with AT-OT. (Referencing your picture, these are generally the bricks below your Minifigs.)
Some Minifigs and accessories.
Set #8084-1 Snowtrooper Battle Pack. (Referencing your picture, some of your Minifigs come from this set.)
Headgear: Part 61182 Minifigure, Headgear Helmet SW Rebel Scout Trooper. ( Comes with a black visor shown in your picture. Headgear used on the figure directly below, which is NOT in your picture.)
Trans-Neon Light Saber: Part #30374 Bar 4L (Lightsaber Blade / Wand).
Chrome Hilt: Part #64567 Minifigure, Weapon Lightsaber Hilt Straight.
Minifig: Part #sw0178 General Maximillian Veers - Goggles Print and Dark Bluish Gray Helmet.
Minifig: Part #Sw0166 Shadow Trooper.